{"title":"Filters","description":"\u003cp\u003eBrowse our Filters collection. Best Price.\u003c\/p\u003e","products":[{"product_id":"antlia-solar-discover-dualband-energy-rejection-filter-erf","title":"Antlia Solar Discover Dualband Energy Rejection Filter (ERF)","description":"\u003ch1\u003eAntlia Solar Discover Dualband Energy Rejection Filter (ERF)\u003c\/h1\u003e\n\u003cp\u003eThe Antlia Dualband Solar Energy Rejection Filter is designed by combining Hydrogen Alpha, Calcium K-Line and Calcium H-Line in one dualband filter. It is the filter used in conjunction with Antlia Solar Discover 3nm CaK, Solar, 5Å CaK or similar product to protect your solar imaging equipments from high temperature and bandpass shifting by rejecting massive heat before it enters telescope when imaging and observing solar.\u003c\/p\u003e\n\u003cp\u003eThey are very effective at blocking UV and IR light, and allow the desired wavelengths Ha 656.3nm, CaK 393.3nm and CaH 396.8nm to pass through.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Features: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- FWHM 25nm with CWL at H-alpha wavelength of 656.3nm; Transmission: T＞95%\u003c\/p\u003e\n\u003cp\u003e- FHWM 25nm with CWL at CaK wavelength 393.3nm covering Calcium K-Line 393.3nm and Calcium K-Line 396.8nm; Transmission: T＞90%\u003c\/p\u003e\n\u003cp\u003e- Coating Range: 200-1700nm wavelengths\u003c\/p\u003e\n\u003cp\u003e- Finished with the most advanced multicoatings\u003c\/p\u003e\n\u003cp\u003e- Coated on heat resistant double-polished substrate\u003c\/p\u003e\n\u003cp\u003e- Antlia ERF 130mm, 150mm，200mm filters are mounted in a housing\/cell to hold it in front of the telescope\u003c\/p\u003e\n\u003cp\u003e- Antlia ERF 2’’ mounted filter is installed on the back end of the refractor telescope\u003c\/p\u003e\n\u003cp\u003e- Transmitted Wavefront: Lambda\/4 or better.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"http:\/\/20564242.s21i.faiusr.com\/4\/2\/ABUIABAEGAAgurvrrwYov732ZzCPCjjgBQ.png?width=700\" width=\"1133\" height=\"644\" alt=\"Antlia dualband ERF spectrum.JPG\" class=\"need_fix\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Notes: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e- The Antlia Dual ERF filters cannot be used on its own. It must be used together with the professionally made solar imaging equipments, which have their own complete blocking filters assembled. Such as Antlia Solar Discover 5Å CaK, Solar Discover 3nm CaK Assembly, Dualband Ha, CaK and CaH filter Assembly;\u003c\/p\u003e\n\u003cp\u003e- Please do not use the Antlia Dualband ERF filter by itself for visual observation;\u003c\/p\u003e\n\u003cp\u003e- 2’’ ERF filter must working on 110mm or smaller refractors.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"633\" cellspacing=\"0\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eAntlia Dual ERF Filter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"153\"\u003e\n\u003cp\u003e\u003cspan\u003eH-alpha\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"309\"\u003e\n\u003cp\u003e\u003cspan\u003eCaK \u0026amp; CaH\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eFWHM\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"153\"\u003e\n\u003cp\u003e\u003cspan\u003e25nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"309\"\u003e\n\u003cp\u003e\u003cspan\u003e25nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eCWL (Central Wavelength)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"153\"\u003e\n\u003cp\u003e\u003cspan\u003eHa \u003cspan name=\"OLE_LINK3\"\u003e656.\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e3\u003c\/span\u003e\u003cspan\u003enm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"309\"\u003e\n\u003cp\u003e\u003cspan\u003eCaK 393nm covering \u003c\/span\u003e\u003cspan\u003eCaK 393.3nm \u0026amp; CaH 396.8nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003ePeak Transmission\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"153\"\u003e\n\u003cp\u003e\u003cspan\u003e9\u003c\/span\u003e\u003cspan\u003e0\u003c\/span\u003e\u003cspan\u003e%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"center\" width=\"309\"\u003e\n\u003cp\u003e\u003cspan\u003e90%\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eCoating Range\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"center\" width=\"462\"\u003e\n\u003cp\u003e\u003cspan\u003e200-1700nm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eFilter Thickness\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"center\" width=\"462\"\u003e\n\u003cp\u003e\u003cspan\u003e10mm+\/-0.05mm\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"center\"\u003e\n\u003cp\u003e\u003cspan\u003eSize\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\" valign=\"center\" width=\"462\"\u003e\n\u003cp\u003e\u003cspan\u003eERF glass\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e130\u003c\/span\u003e\u003cspan\u003emm with cell\u003c\/span\u003e\u003cspan\u003e,\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003efor \u003c\/span\u003e\u003cspan\u003e130-190mm\u003c\/span\u003e\u003cspan\u003e \u003cspan name=\"OLE_LINK4\"\u003eF\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003eixed diameter\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eERF glass\u003c\/span\u003e\u003cspan\u003e 150mm with \u003c\/span\u003e\u003cspan\u003ecell,\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003efor 1\u003c\/span\u003e\u003cspan\u003e50-220mm\u003c\/span\u003e\u003cspan\u003e Fixed diameter\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eERF glass\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003e200\u003c\/span\u003e\u003cspan\u003emm with cell\u003c\/span\u003e\u003cspan\u003e,\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003efor \u003c\/span\u003e\u003cspan\u003e200-250mm\u003c\/span\u003e\u003cspan\u003e Fixed diameter\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSolar Discover Dualband Energy Rejection Filter (ERF), at selected size :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2\"\u003c\/li\u003e\n\u003cli\u003e130mm\u003c\/li\u003e\n\u003cli\u003e150mm\u003c\/li\u003e\n\u003cli\u003e200mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual \u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eWarranty: 3-years\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDisassembly of the assembly is prohibited and voids warranty. Any repair\/returns\/exchange\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003efor this item is not accepted once it has been disassembled.\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Antlia","offers":[{"title":"2\"","offer_id":48195741876389,"sku":"xlp1787937768594","price":65.91,"currency_code":"USD","in_stock":true},{"title":"130mm","offer_id":48195741909157,"sku":"yqy1787937768595","price":661.89,"currency_code":"USD","in_stock":true},{"title":"150mm","offer_id":48195741941925,"sku":"wpl1787937768596","price":810.85,"currency_code":"USD","in_stock":true},{"title":"200mm","offer_id":48195741974693,"sku":"nah1787937768597","price":1471.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/antlia-solar-discover-dualband-energy-rejection-filter-erf_1.jpg?v=1787937772"},{"product_id":"antlia-u-venus-imaging-filter-125-uvenus","title":"Antlia U-Venus Imaging Filter - 1.25'' (UVENUS)","description":"\u003ch2\u003eAntlia U-Venus Imaging Filter - 1.25''\u003c\/h2\u003e\n\u003cp\u003eAntlia Venus-U filter is designed for imaging the cloud structure of Venus and Jupiter with CCD cameras on a telescope. Cloud details primarily reflect in the ultraviolet band which cannot normally be imaged using broadband filters. The Venus-U filter uses the latest dielectric interference coating technology to achieve high transmission efficiency and exceptional isolation of the critical UV bandwidths.\u003c\/p\u003e\n\u003cp\u003eThe filter effectively blocks the contrast damaging frequencies beyond 400nm which typically swamp the ultraviolet cloud details on camera sensors. Like the highest quality Antlia LRGB filters, the U-Venus filter minimizes halos around bright stars and increase the contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommendations in the use of this filter:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1. When U-Venus filter is used with a planetary camera, it is recommended to remove any protective UV-IR window in front of a color planetary camera because this filter may attenuate transmittance of the critical ultraviolet band that contains cloud details.\u003c\/p\u003e\n\u003cp\u003e2. The lower the frequency in the UV band, the longer will be the exposure to achieve sufficient signal in your image. The sensitivity of most sensors also decreases rapidly at shorter UV wavelengths.\u003c\/p\u003e\n\u003cp\u003e3. It should be noted that when using DSLR to shoot ultraviolet flowers, the camera needs to be specially modified to remove the infrared cut filter inside the camera.\u003c\/p\u003e\n\u003cp\u003e4. In non astronomical use, the lighting conditions may block UV transmissions e.g. the UV contents of electronic flash emission, because of a combination of lower emission at shorter wavelengths and increased absorption by the glass of the flash tube. These factors combine together to require a substantially increased exposure time (for continuous UV sources), UV intensity and ISO sensitivity as the wavelength decreases.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNon-astronomical applications：\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUse for general UV photography (flowers, health of plants,insects, forensics and medical imaging)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFilter Ring:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1.25”(M28.5*0.6)\u003c\/p\u003e\n\u003cp\u003eUltra-thin filter cell to minimize vignetting by maximize possible clear aperture\u003c\/p\u003e\n\u003cp\u003eBlack Anodized Finish\u003c\/p\u003e\n\u003cp\u003eLaser Engraving No Fading\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNotes:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1.Using the filter for visual observations is impossible due to the eye's insensitivity to this spectral range (UV).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2.This filter is NOT to be used for visual observations, specifically the sun or UV light sources.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/ABUIABACGAAgkves9gUoxOPwITCgBjjIBA.jpg?v=1723664380\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/ABUIABACGAAgj-es9gUon5rY2wYwoAY4rgQ.jpg?v=1723664386\u0026amp;width=700\" alt=\"\"\u003e\u003c\/h3\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eoptical substrate\u003c\/li\u003e\n\u003cli\u003eThickness: 1.25” mounted (2mm+\/-0.05mm)\u003c\/li\u003e\n\u003cli\u003eSurface Quality: 60\/40 (Refer to MIL-O-13830)\u003c\/li\u003e\n\u003cli\u003e2 sides fine-optically polished to ensure accurate 1\/4 wavefront\u003c\/li\u003e\n\u003cli\u003e30 arcsec parallelism\u003c\/li\u003e\n\u003cli\u003eTave＞80%\u003c\/li\u003e\n\u003cli\u003eOD3（＞0.001）@ 200-1050nm\u003c\/li\u003e\n\u003cli\u003e2 sides Dielectric multi-coating\u003c\/li\u003e\n\u003cli\u003eSingle \/ Non-glued substrate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eAntlia U-Venus Imaging Filter - 1.25''\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eAntlia \u003cspan data-mce-fragment=\"1\"\u003e3-Years Against Delamination\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":48195742040229,"sku":"dza1787937768149","price":140.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/antlia-u-venus-imaging-filter---125-uvenus_1.jpg?v=1787937775"},{"product_id":"baader-astf-astrosolar-telescope-filter-od-50-80mm-280mm","title":"Baader ASTF: AstroSolar Telescope Filter OD 5.0 (80mm - 280mm)","description":"\u003ch1 class=\"product-title\"\u003eASTF: AstroSolar Telescope Filter OD 5.0 (80mm - 280mm)\u003c\/h1\u003e\n\u003ch4\u003eASTF –\u003cspan\u003e \u003c\/span\u003e\u003cb\u003e\u003cspan\u003eBaader Solar Filter for all high-end Telescopes (Refractors, Reflectors, CATs)\u003c\/span\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThis family of solar filters is made in the most elaborate way. AstroSolar must not be put under stress, neither during mounting of the film, nor during any temperature change. For this reason the ASTF-Filter features a temperature compensated cell. The film itself is repeatably cemented onto an injection molded ring, whereas the substrate of that ring has the same thermal expansion like the AstroSolar Filter material itself. This free floating film-carrier ring is held onto the aluminum frame with the help of another holding ring made of fiber reinforced plastic – for a maximum of security against breakage of the cell. This temperature compensated cell enables the AstroSolar filter material to retain its excellent optical quality at any temperature – be it -30°C or +50°C\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSafe for solar observation and photography with all high-end telescopes and extreme tele-lenses\u003c\/li\u003e\n\u003cli\u003eAstroSolar Safety Film OD 5.0, mounted stress-free in temperature compensated cell\u003c\/li\u003e\n\u003cli\u003eSuitable for highest magnifications and detailed observation of individual sunspots\u003c\/li\u003e\n\u003cli\u003eNo Astigmatism during winter observation or with temperature changes in summer\u003c\/li\u003e\n\u003cli\u003e2 sets of 3 injection molded centering-bolts (length 38mm) with threaded brass inserts to center the filter-cell in front of the tube opening. These bolts come in two diameters, 10mm and 20mm. Each bolt features injection molded rubber grip-faces, shaped to easily slide onto any telescope tube – but to come off very hard.\u003c\/li\u003e\n\u003cli\u003eIncludes 3 Safety Straps with adhesive pads, screws, washers and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE: \u003c\/strong\u003eSCT Users must only mount the filter to the Outside of the Tube (the limited depth of the SCT front ID prevents adequate engagement of the centering bolts)\u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\" height=\"226\" bordercolor=\"#111111\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"46\" align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eAlpine #\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"46\" align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eBaader #\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"46\" align=\"center\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eAperture\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cspan size=\"2\"\u003e\u003cb\u003e(mm\/inch)\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"46\" align=\"center\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"1\"\u003eIdeally Suited for\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan size=\"2\"\u003eAperture\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eRange (mm)\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"46\" align=\"center\"\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eClamping Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eInner Tube Dia\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"46\" align=\"center\"\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eClamping Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eOuter Tube Dia\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-80\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593310\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e80 \/ 3.2\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e70 - 90\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e130 - 170\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e100 - 140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-100\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593311\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e100 \/ 3.9\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e90 - 110\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e150 - 190\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e120 - 160\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-120\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593312\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e120 \/ 4.7\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e110 - 130\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e170 - 210\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e140 - 180\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-140\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593313\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e140 \/ 3.2\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e130 - 150\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e190 - 230\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e160 - 200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-160\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593314\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e160 \/ 5.5\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e150 - 170\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e210 - 250\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e180 - 220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-180\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593315\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e180 \/ 7.1\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e170 - 190\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e230 - 270\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e200 - 240\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-200\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593316\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e200 \/ 7.9\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e190 - 210\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e250 - 290\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e220 - 260\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-240\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593317\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e240 \/ 9.5\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e230 - 250\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e290 - 330\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e260 - 300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-280\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593318\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e280 \/ 11.0\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e270 - 290\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e330 - 370\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e300 - 340\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003e\n\u003cbr\u003eAbout BSF\u003c\/h4\u003e\n\u003cp\u003eAfter 15 years of offering AstroSolar film sheets as a DIY-product, this system of Baader Solar Filters™ is designed to retain the true optical quality of the diffraction limited AstroSolar Safety Film.\u003c\/p\u003e\n\u003cp\u003eBaader Solar Filters provide a professional and secure solution to observe and image the Sun using AstroSolar Safety Film. Many ready-made filters stretch the filter material like a drumhead in order to make it look like a piece of glass – this absolutely estroys the image quality, rendering the film useless for high magnification work. AstroSolar must be mounted entirely stress free in order to perform like a high precision planeoptical window. It sounds like a contradiction with the traditional perception of quality, but AstroSolar must show slight ripples! When the film is put under stress by an improper cell mount its optical quality is degraded and it tehn performs just like a common coated glass-filter made of untreated floatglass.\u003c\/p\u003e\n\u003cp\u003eWith AstroSolar™ the Sun appears in it’ s real color – neutral white. Other films and most glass filters produce a blurry bluish, yellow-orange, or reddish Solar image, thereby cutting part of the spectrum. Especially with an orange sun, it is very hard to see faculae regions which are visible predominantly in the blue wing of the spectrum.\u003c\/p\u003e\n\u003cp\u003eBaader Solar Filters are available in 3 types; ASTF - AstroSolar Telescope Filter, ASSF - AstroSolar Spotter Filter, and ASBF - AstroSolar Binocular Filter.  With a total 21 sizes, there is a Baader Solar Filter available to fit practically every Telescope, Spotting Scope and Binocular.\u003c\/p\u003e\n\u003ch4\u003eSupplied with each BSF\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOriginal Baader AstroSolar® Safety Film (OD 5.0), cell mounted and quality inspected by skilled members of Baader's staff\u003c\/li\u003e\n\u003cli\u003eClear white IR-rejecting front ring with reinforcing raised edges along the outer and inner circumference, designed to protect the solar filter material from contact with any sharp metal edge\u003c\/li\u003e\n\u003cli\u003e3 injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening. These bolts come in three different diameters, depending on the filter category (ASTF\/ASSF\/ASBF). Each bolt features injection molded rubber grip-faces, shaped to easily slide onto any telescope tube – but to come off very hard\u003c\/li\u003e\n\u003cli\u003eNo tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube NOTE: SCT Users must only mount the filter to the Outside of the Tube (the limited depth of the SCT front ID prevents adequate engagement of the centering bolts)\u003c\/li\u003e\n\u003cli\u003eNon-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index\u003c\/li\u003e\n\u003cli\u003eAdditional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screwdriver if preferred by the user\u003c\/li\u003e\n\u003cli\u003eIndex scale provided beside each adjustment slot – adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes\u003c\/li\u003e\n\u003cli\u003eBlack sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame – for blocking sunlight from passing trough the filter cell beside the filter area\u003c\/li\u003e\n\u003cli\u003eOnly for ASTF-filters: rubber plugs supplied as cover for closing unused adjustment slots in the aluminum frame\u003c\/li\u003e\n\u003cli\u003eThree security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the telescope under any circumstances (gust of wind asf)\u003c\/li\u003e\n\u003cli\u003eWarning text printed onto the front side of each filter cell: Read the Instructions before use\u003c\/li\u003e\n\u003cli\u003eCardboard gift box fit for safely shipping the filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\" height=\"226\" bordercolor=\"#111111\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"46\" align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eAlpine #\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"46\" align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eBaader #\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"46\" align=\"center\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eAperture\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cspan size=\"2\"\u003e\u003cb\u003e(mm\/inch)\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"46\" align=\"center\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"1\"\u003eIdeally Suited for\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan size=\"2\"\u003eAperture\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eRange (mm)\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"46\" align=\"center\"\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eClamping Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eInner Tube Dia\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"46\" align=\"center\"\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eClamping Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eOuter Tube Dia\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-80\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593310\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e80 \/ 3.2\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e70 - 90\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e130 - 170\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e100 - 140\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-100\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593311\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e100 \/ 3.9\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e90 - 110\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e150 - 190\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e120 - 160\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-120\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593312\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e120 \/ 4.7\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e110 - 130\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e170 - 210\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e140 - 180\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-140\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593313\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e140 \/ 3.2\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e130 - 150\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e190 - 230\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e160 - 200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-160\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593314\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e160 \/ 5.5\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e150 - 170\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e210 - 250\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e180 - 220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-180\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593315\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e180 \/ 7.1\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e170 - 190\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e230 - 270\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e200 - 240\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-200\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593316\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e200 \/ 7.9\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e190 - 210\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e250 - 290\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e220 - 260\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-240\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593317\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e240 \/ 9.5\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e230 - 250\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e290 - 330\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e260 - 300\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\"\u003e\u003cb\u003eASTF-280\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\"\u003e24593318\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e280 \/ 11.0\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\"\u003e270 - 290\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\"\u003e330 - 370\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\"\u003e300 - 340\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSolar Filter\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e2-Year Warranty\u003c\/p\u003e\n\u003ch4\u003eSafety Information\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHow to Protect Your Eyes\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e(link to Safety Information)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cb\u003e\u003cspan color=\"#006699\" size=\"4\"\u003eSafety Precautions \u003c\/span\u003e\u003cspan color=\"#006699\"\u003e-  How to Prevent Accidents\u003c\/span\u003e\u003c\/b\u003e\u003cspan size=\"4\"\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/span\u003e(link to Safety Precautions)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Baader Planetarium","offers":[{"title":"80mm","offer_id":48195742072997,"sku":"lek1787937775184","price":56.86,"currency_code":"USD","in_stock":true},{"title":"100mm","offer_id":48195742105765,"sku":"yoy1787937775185","price":71.07,"currency_code":"USD","in_stock":true},{"title":"120mm","offer_id":48195742138533,"sku":"oyi1787937775186","price":99.44,"currency_code":"USD","in_stock":true},{"title":"140mm","offer_id":48195742171301,"sku":"lhl1787937775187","price":109.85,"currency_code":"USD","in_stock":true},{"title":"160mm","offer_id":48195742204069,"sku":"rkl1787937775188","price":108.75,"currency_code":"USD","in_stock":true},{"title":"180mm","offer_id":48195742236837,"sku":"spp1787937775189","price":112.81,"currency_code":"USD","in_stock":true},{"title":"200mm","offer_id":48195742269605,"sku":"yys1787937775190","price":120.72,"currency_code":"USD","in_stock":true},{"title":"240mm","offer_id":48195742302373,"sku":"piz1787937775191","price":150.34,"currency_code":"USD","in_stock":true},{"title":"280mm","offer_id":48195742335141,"sku":"qop1787937775192","price":177.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/baader-astf-astrosolar-telescope-filter-od-50-80mm---280mm_1.webp?v=1787937780"},{"product_id":"player-one-7nm-sho-narrowband-filters-2","title":"Player One 7nm SHO Narrowband Filters 2\"","description":"\u003ch2\u003ePlayer One 7nm SHO Narrowband Filters 2\"\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThis is a New Product -\u003c\/em\u003e Please note that further information will come soon. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMultilayer composite coating\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/17231936382862_1.png?v=1724858375\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSelected 2\" narrowband filter :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHa 7nm \u003c\/li\u003e\n\u003cli\u003eSII 7nm\u003c\/li\u003e\n\u003cli\u003eOIII 7nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003ePlayer one 2-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Player One","offers":[{"title":"SII 7nm - 2\"","offer_id":48195742531749,"sku":"swc1787937780260","price":194.2,"currency_code":"USD","in_stock":true},{"title":"Ha 7nm - 2\"","offer_id":48195742564517,"sku":"swk1787937780261","price":151.33,"currency_code":"USD","in_stock":true},{"title":"OIII 7nm - 2\"","offer_id":48195742597285,"sku":"bdh1787937780262","price":186.64,"currency_code":"USD","in_stock":true},{"title":"SHO 7nm Full Set - 2\"","offer_id":48195742630053,"sku":"qgq1787937780263","price":560.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/player-one-7nm-sho-narrowband-filters-2_1.png?v=1787937784"},{"product_id":"baader-astrosolar-spotting-scope-filter-od-50-50mm-150mm","title":"Baader AstroSolar Spotting Scope Filter OD 5.0 (50mm - 150mm)","description":"\u003ch1\u003eBaader AstroSolar Spotting Scope Filter OD 5.0 (50mm - 150mm)\u003c\/h1\u003e\n\u003cp\u003eThis family of filters offers a stable and rigid solution for all spotting scopes, camera telephoto-lenses and amateur telescopes, with magnifications up to 120x. The AstroSolar filter material is likewise mounted onto a plastic ring whereas the plastic ring itself works as stabilizing element for the filter cell. This plastic ring is mounted onto the aluminum front frame. The thermal expansion coefficient of the plastic and the film are similar to minimize thermal stress on the film.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eASBF 50 to 100 packages come with three centering bolts of 13mm diameter and 24 mm height, and\u003cspan\u003e \u003c\/span\u003e3 Safety Straps with adhesive pads, screws, washers and instructions\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eASSF 130 and 150 packages come with three centering bolts of 10mm diameter and 38mm length\u003c\/span\u003e\u003cspan\u003e, and \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003e3 Safety Straps with adhesive pads, screws, washers and instructions\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout BSF\u003c\/h4\u003e\n\u003cp\u003eAfter 15 years of offering AstroSolar film sheets as a DIY-product, this system of Baader Solar Filters™ is designed to retain the true optical quality of the diffraction limited AstroSolar Safety Film.\u003c\/p\u003e\n\u003cp\u003eBaader Solar Filters provide a professional and secure solution to observe and image the Sun using AstroSolar Safety Film. Many ready-made filters stretch the filter material like a drumhead in order to make it look like a piece of glass – this absolutely estroys the image quality, rendering the film useless for high magnification work. AstroSolar must be mounted entirely stress free in order to perform like a high precision planeoptical window. It sounds like a contradiction with the traditional perception of quality, but AstroSolar must show slight ripples! When the film is put under stress by an improper cell mount its optical quality is degraded and it tehn performs just like a common coated glass-filter made of untreated floatglass.\u003c\/p\u003e\n\u003cp\u003eWith AstroSolar™ the Sun appears in it’ s real color – neutral white. Other films and most glass filters produce a blurry bluish, yellow-orange, or reddish Solar image, thereby cutting part of the spectrum. Especially with an orange sun, it is very hard to see faculae regions which are visible predominantly in the blue wing of the spectrum.\u003c\/p\u003e\n\u003cp\u003eBaader Solar Filters are available in 3 types; ASTF - AstroSolar Telescope Filter, ASSF - AstroSolar Spotter Filter, and ASBF - AstroSolar Binocular Filter.  With a total 21 sizes, there is a Baader Solar Filter available to fit practically every Telescope, Spotting Scope and Binocular.\u003c\/p\u003e\n\u003ch4\u003eSupplied with each BSF\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOriginal Baader AstroSolar® Safety Film (OD 5.0), cell mounted and quality inspected by skilled members of Baader's staff\u003c\/li\u003e\n\u003cli\u003eClear white IR-rejecting front ring with reinforcing raised edges along the outer and inner circumference, designed to protect the solar filter material from contact with any sharp metal edge\u003c\/li\u003e\n\u003cli\u003e3 injection molded centering-bolts with threaded brass inserts to center the filter-cell in front of the tube opening. These bolts come in three different diameters, depending on the filter category (ASTF\/ASSF\/ASBF). Each bolt features injection molded rubber grip-faces, shaped to easily slide onto any telescope tube – but to come off very hard\u003c\/li\u003e\n\u003cli\u003eNo tool mounting and adjustment of the centering bolts to fit a wide variety of mechanical tube diameters. Bolts made to contact the outside or optional (if appropriate) the inside of the optical instrument tube NOTE: SCT Users must only mount the filter to the Outside of the Tube (the limited depth of the SCT front ID prevents adequate engagement of the centering bolts)\u003c\/li\u003e\n\u003cli\u003eNon-rotating sliding fasteners made from aluminum that hold the centering bolts. These metal sliders are equipped with a machined indicator to point towards the adjustment index\u003c\/li\u003e\n\u003cli\u003eAdditional Phillips screws are integrated into the sliding fasteners, so that the centering bolts can be firmly fastened with a screw driver if preferred by the user\u003c\/li\u003e\n\u003cli\u003eIndex scale provided beside each adjustment slot – adjacent to each sliding fastener, for fast and repeatable adjustment of the filter cell onto different telescope tubes\u003c\/li\u003e\n\u003cli\u003eBlack sliding washers supplied to securely cover the full length of the adjustment slots in the aluminum frame – for blocking sunlight from passing trough the filter cell beside the filter area\u003c\/li\u003e\n\u003cli\u003eOnly for ASTF-filters: rubber plugs supplied as cover for closing unused adjustment slots in the aluminum frame\u003c\/li\u003e\n\u003cli\u003eThree security straps included, to secure the position of the filter cell with Velcro-adhesive pads. A safety feature to absolutely ensure a secure fit in front of the telescope under any circumstances (gust of wind asf)\u003c\/li\u003e\n\u003cli\u003eWarning text printed onto the front side of each filter cell: Read the Instructions before use\u003c\/li\u003e\n\u003cli\u003eCardboard gift box fit for safely shipping the filter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications \u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"0\" cellspacing=\"0\" width=\"100%\" height=\"226\" style=\"height: 384.829px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 110.398px;\"\u003e\n\u003ctd width=\"12%\" height=\"46\" align=\"center\" style=\"height: 110.398px; width: 12.5609%;\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eAlpine #\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"46\" align=\"center\" style=\"height: 110.398px; width: 13.7923%;\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eBaader #\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"46\" align=\"center\" style=\"height: 110.398px; width: 17.9793%;\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eAperture\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cspan size=\"2\"\u003e\u003cb\u003e(mm\/inch)\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"46\" align=\"center\" style=\"height: 110.398px; width: 21.1811%;\"\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"1\"\u003eIdeally Suited for\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan size=\"2\"\u003eAperture\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp align=\"center\"\u003e\u003cb\u003e\u003cspan size=\"2\"\u003eRange (mm)\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"46\" align=\"center\" style=\"height: 110.398px; width: 16.7478%;\"\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eClamping Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eInner Tube Dia\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"46\" align=\"center\" style=\"height: 110.398px; width: 17.733%;\"\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eClamping Range\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan size=\"2\"\u003e\u003cb\u003eOuter Tube Dia\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 12.5609%;\"\u003e\u003cb\u003eASSF-50\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 13.7923%;\"\u003e2459335\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.9793%;\"\u003e50 \/ 2.0\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 21.1811%;\"\u003e40 - 60\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 16.7478%;\"\u003e81 - 96\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.733%;\"\u003e55 - 70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 12.5609%;\"\u003e\u003cb\u003eASSF-65\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 13.7923%;\"\u003e2459336\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.9793%;\"\u003e65 \/ 2.6\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 21.1811%;\"\u003e55 - 75\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 16.7478%;\"\u003e96 - 111\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.733%;\"\u003e70 - 85\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 12.5609%;\"\u003e\u003cb\u003eASSF-80\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 13.7923%;\"\u003e2459337\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.9793%;\"\u003e80 \/ 3.2\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 21.1811%;\"\u003e70 - 90\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 16.7478%;\"\u003e111 - 126\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.733%;\"\u003e85 - 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 12.5609%;\"\u003e\u003cb\u003eASSF-100\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 13.7923%;\"\u003e2459338\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.9793%;\"\u003e100 \/ 3.9\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 21.1811%;\"\u003e90 - 110\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 16.7478%;\"\u003e131 - 146\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.733%;\"\u003e105 - 120\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 12.5609%;\"\u003e\u003cb\u003eASSF-115\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 13.7923%;\"\u003e2459339\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.9793%;\"\u003e115 \/ 4.5\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 21.1811%;\"\u003e105 - 125\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 16.7478%;\"\u003e146 - 161\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.733%;\"\u003e120 - 135\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 12.5609%;\"\u003e\u003cb\u003eASSF-130\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 13.7923%;\"\u003e2459340\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.9793%;\"\u003e130 \/ 5.1\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 21.1811%;\"\u003e120- 140\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 16.7478%;\"\u003e168 - 198\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.733%;\"\u003e148 - 178\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2045px;\"\u003e\n\u003ctd width=\"12%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 12.5609%;\"\u003e\u003cb\u003eASSF-150\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd width=\"9%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 13.7923%;\"\u003e2459341\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.9793%;\"\u003e150 \/ 5.9\u003c\/td\u003e\n\u003ctd width=\"10%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 21.1811%;\"\u003e140- 160\u003c\/td\u003e\n\u003ctd width=\"16%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 16.7478%;\"\u003e188 - 218\u003c\/td\u003e\n\u003ctd width=\"17%\" height=\"19\" align=\"center\" style=\"height: 39.2045px; width: 17.733%;\"\u003e168 - 198\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIn the Box\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eBaader AstroSolar Spotting Scope Filter OD 5.0, at selected aperture size : \u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e50mm (2.0\")\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e65mm (2.6\")\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e80mm (3.2\")\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e100mm (3.9\")\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e115mm (4.5\")\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e130mm  (5.1\")\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e150mm (5.9\")\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"product-block\n            product-block--vendor\"\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003cbr data-mce-fragment=\"1\"\u003e\n\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e2-Year Warranty\u003c\/p\u003e\n\u003ch4\u003eSafety Information\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Warning\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e-\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eHow to Protect Your Eyes\u003c\/strong\u003e\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e(link to Safety Information)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cb\u003e\u003cspan color=\"#006699\" size=\"4\"\u003eSafety Precautions \u003c\/span\u003e\u003cspan color=\"#006699\"\u003e-  How to Prevent Accidents\u003c\/span\u003e\u003c\/b\u003e\u003cspan size=\"4\"\u003e\u003cb\u003e \u003c\/b\u003e\u003c\/span\u003e(link to Safety Precautions)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Baader Planetarium","offers":[{"title":"50mm (2.0\")","offer_id":48195742662821,"sku":"xvx1787937781254","price":37.39,"currency_code":"USD","in_stock":true},{"title":"65mm (2.6\")","offer_id":48195742695589,"sku":"djt1787937781255","price":46.82,"currency_code":"USD","in_stock":true},{"title":"80mm (3.2\")","offer_id":48195742728357,"sku":"xib1787937781256","price":51.87,"currency_code":"USD","in_stock":true},{"title":"100mm (3.9\")","offer_id":48195742761125,"sku":"zyg1787937781257","price":64.81,"currency_code":"USD","in_stock":true},{"title":"115mm (4.5\")","offer_id":48195742793893,"sku":"sfa1787937781258","price":65.16,"currency_code":"USD","in_stock":true},{"title":"130mm (5.1\")","offer_id":48195742826661,"sku":"jym1787937781259","price":67.84,"currency_code":"USD","in_stock":true},{"title":"150mm (5.9\")","offer_id":48195742859429,"sku":"lib1787937781260","price":97.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/baader-astrosolar-spotting-scope-filter-od-50-50mm---150mm_1.png?v=1787937785"},{"product_id":"player-one-ch4-8nm-125-filter-e-series-ch4-125e","title":"Player One CH4 8nm 1.25″ Filter E-series (CH4-125E)","description":"\u003ch2\u003ePlayer One CH4 8nm 1.25″ Filter E-series\u003c\/h2\u003e\n\u003cp\u003ePlayer One E-series is an upgrade series of S-series, using high quality optical glass substrate and multi-layer composite coating technology, producting with higher standard than S-series, optimized for CMOS\/CCD camera, can provide very professional effect in astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cimg sizes=\"(max-width: 1928px) 100vw, 1928px\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2.png 1928w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-300x141.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-1024x480.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-768x360.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-1536x719.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-600x281.png 600w\" height=\"292\" width=\"623\" alt=\"\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2.png\" class=\"aligncenter size-full wp-image-6539\" data-mce-src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2.png?width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong data-spm-anchor-id=\"2013.1.0.i1.44c7454dwNdx9O\"\u003e1.25″ CH4 8nm filter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-section=\"0\" class=\"tgt\"\u003e\u003cspan data-group=\"0-0\" data-sentence=\"0\" data-section=\"0\" class=\"tgt\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.25 inch, thread M28.5*0.6\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-section=\"2\" class=\"tgt\"\u003e\u003cspan data-group=\"2-0\" data-sentence=\"0\" data-section=\"2\" class=\"tgt\"\u003e\u003cstrong\u003eFrame thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebody 5mm+ thread 2.5mm, a total of 7.5mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-section=\"4\" class=\"tgt\"\u003e\u003cspan data-group=\"4-0\" data-sentence=\"0\" data-section=\"4\" class=\"tgt\"\u003e\u003cstrong\u003eFilter glass thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.85mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-section=\"4\"\u003e\u003cstrong\u003eBandwidth:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8nm\u003c\/p\u003e\n\u003cp data-section=\"4\"\u003e\u003cstrong\u003eCWL (center wavelength):\u003c\/strong\u003e889nm\u003c\/p\u003e\n\u003cp data-section=\"4\"\u003e\u003cstrong\u003ePV:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1\/4 lambda\u003c\/p\u003e\n\u003cp data-section=\"6\" class=\"tgt\"\u003e\u003cspan data-group=\"6-0\" data-sentence=\"0\" data-section=\"6\" class=\"tgt\"\u003e\u003cstrong\u003eTransmittance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e≈90%\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-section=\"8\" class=\"tgt\"\u003e\u003cspan data-group=\"8-0\" data-sentence=\"0\" data-section=\"8\" class=\"tgt\"\u003e\u003cstrong\u003eBlocking depth:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOD4\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-section=\"8\"\u003e\u003cimg sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E-1024x850.jpg 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E-300x249.jpg 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E-768x638.jpg 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E-1536x1276.jpg 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E-600x498.jpg 600w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E.jpg 1657w\" height=\"389\" width=\"469\" alt=\"\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E-1024x850.jpg\" class=\"aligncenter wp-image-7229 size-large\" data-mce-src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-E-1024x850.jpg?width=700\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg sizes=\"(max-width: 1856px) 100vw, 1856px\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1.png 1856w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1-300x168.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1-1024x575.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1-768x431.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1-1536x862.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1-600x337.png 600w\" height=\"353\" width=\"629\" alt=\"\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1.png\" class=\"aligncenter size-full wp-image-6776\" data-mce-src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/06\/CH4-1.png?width=700\"\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp class=\"product_title entry-title\"\u003ePlayer One CH4 8nm 1.25″ Filter E-series\u003c\/p\u003e\n\u003cp class=\"product_title entry-title\"\u003e \u003c\/p\u003e\n\u003ch3 class=\"product_title entry-title\"\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003ePlayer One 2-year Warranty\u003c\/p\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":48195742892197,"sku":"sga1787937782597","price":66.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/player-one-ch4-8nm-125-filter-e-series-ch4-125e_1.png?v=1787937786"},{"product_id":"player-one-7nm-sho-narrowband-filters-125","title":"Player One 7nm SHO Narrowband Filters 1.25\"","description":"\u003ch2\u003ePlayer One 7nm SHO Narrowband Filters 1.25\" \u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cem\u003eThis is a New Product -\u003c\/em\u003e Please note that further information will come soon. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMultilayer composite coating\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/17231936382862_1.png?v=1724858375\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSelected 1.25\" narrowband filter :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHa 7nm \u003c\/li\u003e\n\u003cli\u003eSII 7nm\u003c\/li\u003e\n\u003cli\u003eOIII 7nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003ePlayer one 2-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Player One","offers":[{"title":"SII 7nm - 1.25\"","offer_id":48195742924965,"sku":"ndx1787937782231","price":92.87,"currency_code":"USD","in_stock":true},{"title":"Ha 7nm - 1.25\"","offer_id":48195742957733,"sku":"gie1787937782232","price":94.18,"currency_code":"USD","in_stock":true},{"title":"OIII 7nm - 1.25\"","offer_id":48195742990501,"sku":"kka1787937782233","price":95.48,"currency_code":"USD","in_stock":true},{"title":"SHO Set 7nm -1.25\"","offer_id":48195743023269,"sku":"mrg1787937782234","price":234.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/player-one-7nm-sho-narrowband-filters-125_1.png?v=1787937786"},{"product_id":"player-one-uvenus-125-uv-pass-filter-e-series-uv125e","title":"Player One UVenus 1.25″ UV-PASS Filter E-series (UV125E)","description":"\u003ch2\u003ePlayer One UVenus 1.25″ UV-PASS Filter E-series\u003c\/h2\u003e\n\u003cp\u003ePlayer One E-series is an upgrade series of S-series, using high quality optical glass substrate and multi-layer composite coating technology, producting with higher standard than S-series, optimized for CMOS\/CCD camera, can provide very professional effect in astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter size-full wp-image-6539\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2.png?width=700\" alt=\"\" width=\"634\" height=\"297\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2.png 1928w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-300x141.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-1024x480.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-768x360.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-1536x719.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-2-600x281.png 600w\" sizes=\"(max-width: 1928px) 100vw, 1928px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong data-spm-anchor-id=\"2013.1.0.i1.44c7454dwNdx9O\"\u003eUVenus 1.25″ UV-PASS filter（Design for Venus imaging）\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eUVenus filter is an ultraviolet filter,\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eonly allow 320nm-380nm ultraviolet light pass,\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eit can be used to shoot the clouds of Venus.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter size-full wp-image-6775\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-1sss.png?width=700\" alt=\"\" width=\"570\" height=\"266\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-1sss.png 1920w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-1sss-300x140.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-1sss-1024x478.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-1sss-768x359.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-1sss-1536x718.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-1sss-600x280.png 600w\" sizes=\"(max-width: 1920px) 100vw, 1920px\"\u003e\u003c\/p\u003e\n\u003cp class=\"tgt\" data-section=\"0\"\u003e\u003cspan class=\"tgt\" data-section=\"0\" data-sentence=\"0\" data-group=\"0-0\"\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.25 inch, thread M28.5*0.6\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"tgt\" data-section=\"2\"\u003e\u003cspan class=\"tgt\" data-section=\"2\" data-sentence=\"0\" data-group=\"2-0\"\u003e\u003cstrong\u003eFrame thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebody 5mm+ thread 2.5mm, a total of 7.5mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"tgt\" data-section=\"4\"\u003e\u003cspan class=\"tgt\" data-section=\"4\" data-sentence=\"0\" data-group=\"4-0\"\u003e\u003cstrong\u003eFilter glass thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1.85mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-section=\"4\"\u003e\u003cstrong\u003eBandwidth:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e60nm\u003c\/p\u003e\n\u003cp data-section=\"4\"\u003e\u003cstrong\u003eCWL (center wavelength):\u003c\/strong\u003e350nm\u003c\/p\u003e\n\u003cp data-section=\"4\"\u003e\u003cstrong\u003ePV:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1\/4 lambda\u003c\/p\u003e\n\u003cp class=\"tgt\" data-section=\"6\"\u003e\u003cspan class=\"tgt\" data-section=\"6\" data-sentence=\"0\" data-group=\"6-0\"\u003e\u003cstrong\u003eTransmittance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e≈80%\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"tgt\" data-section=\"8\"\u003e\u003cspan class=\"tgt\" data-section=\"8\" data-sentence=\"0\" data-group=\"8-0\"\u003e\u003cstrong\u003eBlocking depth:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOD5 (200nm-700nm), OD\u003c\/span\u003e\u003cspan\u003e4(700nm-1100nm), OD3(1000nm-1500nm)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter size-full wp-image-7227\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVenus-Filter-curve-final-1.png?width=700\" alt=\"\" width=\"569\" height=\"260\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVenus-Filter-curve-final-1.png 1648w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVenus-Filter-curve-final-1-300x137.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVenus-Filter-curve-final-1-1024x468.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVenus-Filter-curve-final-1-768x351.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVenus-Filter-curve-final-1-1536x702.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVenus-Filter-curve-final-1-600x274.png 600w\" sizes=\"(max-width: 1648px) 100vw, 1648px\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy to use a UVenus filter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAs we know, Venus has very thick atmosphere, and the clouds has very high reflection of ultraviolet. Using a UVenus filter will enhance the details of Venus. Our UVenus filter has 80% peak transmittance and OD5.0 off-band blocking, it will improve the imaging effect a lot!\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter size-full wp-image-6542\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-5.png?width=700\" alt=\"\" width=\"550\" height=\"271\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-5.png 1784w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-5-300x148.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-5-1024x504.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-5-768x378.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-5-1536x756.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-5-600x295.png 600w\" sizes=\"(max-width: 1784px) 100vw, 1784px\"\u003e\u003c\/p\u003e\n\u003cp\u003eUVenus filter using color optical glass and over 100+ multi-coating process, to make sure this filter has very good quality.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter size-full wp-image-6540\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3.png?width=700\" alt=\"\" width=\"566\" height=\"291\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3.png 2057w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3-300x154.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3-1024x527.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3-768x395.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3-1536x791.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3-2048x1054.png 2048w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-3-600x309.png 600w\" sizes=\"(max-width: 2057px) 100vw, 2057px\"\u003e\u003c\/p\u003e\n\u003cp\u003eMulti-coating and color optical glass, make this filter has very beautiful color on both sides.\u003c\/p\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter size-full wp-image-6773\" src=\"http:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-4s.png?width=700\" alt=\"\" width=\"565\" height=\"260\" srcset=\"https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-4s.png 1813w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-4s-300x138.png 300w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-4s-1024x471.png 1024w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-4s-768x353.png 768w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-4s-1536x707.png 1536w, https:\/\/player-one-astronomy.com\/wp-content\/uploads\/2023\/05\/UVneus-filter-4s-600x276.png 600w\" sizes=\"(max-width: 1813px) 100vw, 1813px\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003ePlayer One UVenus 1.25\" filter\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003ePlayer One 2-year warranty\u003c\/p\u003e","brand":"Player One","offers":[{"title":"Default Title","offer_id":48195743056037,"sku":"wtj1787937785087","price":105.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/player-one-uvenus-125-uv-pass-filter-e-series-uv125e_1.png?v=1787937789"},{"product_id":"player-one-lrgb-filter-s-series","title":"Player One LRGB Filter S-series","description":"\u003ch1\u003ePlayer One LRGB Filter S-series\u003c\/h1\u003e\n\u003cp\u003ePlayer One\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eS\u003c\/strong\u003e-series filter using high quality optical glass substrate and multi-layer composite coating technology, which has excellent optical performance in astrophotography.\u003c\/p\u003e\n\u003cp\u003e\u003cimg height=\"316\" width=\"830\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Untitled_05c20391-56d1-43b0-baa3-6194f2e835e6.webp?v=1732136913\" alt=\"\" data-mce-src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Untitled_05c20391-56d1-43b0-baa3-6194f2e835e6.webp?v=1732136913\u0026amp;width=700\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong data-spm-anchor-id=\"2013.1.0.i1.44c7454dwNdx9O\"\u003eLRGB filter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eIn astrophotography, LRGB filters are designed for monochrome cameras. With high quality LRGB filters, users can combine LRGB channels to get vivid true color images. Player One produced LRGB filters with excellent transmittance, cutoff rate and halo control.\u003c\/p\u003e\n\u003ch2 class=\"has-vivid-red-color has-text-color wp-block-heading\"\u003e\u003cstrong\u003eTechnical Data\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul class=\"wp-block-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmittance\u003c\/strong\u003e：About 95%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass Thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.0+\/-0.03 mm  (1.25”\/2″)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface accuracy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1\/4 lambda (both side)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan data-group=\"8-0\" data-sentence=\"0\" data-section=\"8\" class=\"tgt\"\u003eBlocking depth\u003c\/span\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOD3(\u0026lt;0.1% transmission of off-band)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNIR cutoff:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e700nm-1100nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame threads:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eM28.5*0.6 (1.25″ filter)\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-group=\"2-0\" data-sentence=\"0\" data-section=\"2\" class=\"tgt\"\u003e\u003cstrong\u003eFrame thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebody 5mm+ thread 2.5mm, a total of 7.5mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications \u003c\/h3\u003e\n\u003cul class=\"wp-block-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransmittance\u003c\/strong\u003e：About 95%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass Thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2.0+\/-0.03 mm  (1.25”\/2″)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface accuracy:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1\/4 lambda (both side)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan data-group=\"8-0\" data-sentence=\"0\" data-section=\"8\" class=\"tgt\"\u003eBlocking depth\u003c\/span\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOD3(\u0026lt;0.1% transmission of off-band)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNIR cutoff:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e700nm-1100nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame threads:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eM28.5*0.6 (1.25″ filter)\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-group=\"2-0\" data-sentence=\"0\" data-section=\"2\" class=\"tgt\"\u003e\u003cstrong\u003eFrame thickness:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebody 5mm+ thread 2.5mm, a total of 7.5mm\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/Untitled_3722681d-e06c-46ae-bd72-1d4dff427d36.webp?v=1732137019\u0026amp;width=700\" width=\"1333\" height=\"780\"\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eChoice of LRGB  Filters : \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1.25″\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eor :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2″\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003ePlayer one 2-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Player One","offers":[{"title":"1.25″","offer_id":48195743121573,"sku":"hfe1787937788534","price":97.23,"currency_code":"USD","in_stock":true},{"title":"2″","offer_id":48195743154341,"sku":"tif1787937788535","price":171.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/player-one-lrgb-filter-s-series_1.webp?v=1787937792"},{"product_id":"astronomy-plus-neutral-density-125-filter-set-ta191","title":"Astronomy Plus Neutral Density 1.25\" Filter Set (TA191)","description":"\u003ch1\u003eAstronomy Plus Neutral Density 1.25\" Filter Set\u003c\/h1\u003e\n\u003cp\u003eNeutral density filters are an essential tool for astronomers and astrophotographers, especially when observing bright objects like the Moon, planets, or stars. \u003c\/p\u003e\n\u003cp\u003eBy reducing the amount of light entering the eyepiece, they help cut glare and enhance contrast without distorting the true colors of the objects. These filters typically allow only a small percentage of light to reach the eyepiece, making it much more comfortable to view bright objects like the Moon or Venus. \u003c\/p\u003e\n\u003cp\u003eUnlike color filters, neutral density filters maintain a natural color balance, providing a clearer and more accurate image. They can also be used to dim bright stars or enhance detail when splitting close double stars. Designed to fit 1.25\" eyepieces, these filters are durable and can be stacked with other filters for more versatile light control.\u003c\/p\u003e\n\u003cp\u003eThis set includes six neutral density filters, offering different levels of light reduction for various observing conditions : 52%, 25%, 12.5%, 6.25%, 3.12%, 1.56%. The filters come neatly stored in a durable aluminum carrying case, ensuring they are protected and easily accessible during your astronomy or astrophotography sessions.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"0\" cellspacing=\"0\"\u003e\n\u003ccolgroup width=\"85\" span=\"2\"\u003e\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eFilter\u003c\/td\u003e\n\u003ctd align=\"center\"\u003eLight Transmission\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eND2\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e52.00%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eND4\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e25.00%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eND8\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e12.50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eND16\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e6.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eND32\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e3.12%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd align=\"center\" height=\"17\"\u003eND64\u003c\/td\u003e\n\u003ctd align=\"center\"\u003e1.56%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e- 6 filters :\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eND2\u003c\/li\u003e\n\u003cli\u003eND4\u003c\/li\u003e\n\u003cli\u003eND8\u003c\/li\u003e\n\u003cli\u003eND16\u003c\/li\u003e\n\u003cli\u003eND32\u003c\/li\u003e\n\u003cli\u003eND65\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e- Aluminum carrying case\u003c\/p\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"xlarge-9 xlarge-centered columns\"\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"single_product_summary_related\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"xlarge-9 xlarge-centered columns\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"large-12 large-centered columns\"\u003eAstronomy Plus 1 year Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Astronomy Plus","offers":[{"title":"Default Title","offer_id":48196170514597,"sku":"mpm1787952186187","price":28.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/astronomy-plus-neutral-density-125-filter-set-ta191_1.jpg?v=1787952191"},{"product_id":"antares-2-filter-neutral-density-13-used-nd13-u","title":"Antares 2\" Filter Neutral Density 13% - USED (ND13-U)","description":"\u003ch1\u003eAntares Filter Neutral Density 13% - USED\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan style=\"color: #fc0404;\"\u003e\u003cstrong\u003eThis filter is in excellent condition.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv class=\"tab-pane fade active in\" aria-expanded=\"true\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"tab-pane fade in active\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cdiv class=\"tab-pane fade in active\"\u003e\n\u003cdiv class=\"product-description\"\u003eNeutral density filters can reduce brightness across the visual spectrum without losing resolution, enhancing lunar-planetary observing. Can be used stacked with color filters. The ND13 transmits 13% and threads into all 1.25\" accessories.\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\u003cstrong\u003eNOT FOR SOLAR VIEWING\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\n\u003ch3\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\nAntares Filter Neutral Density 13% - USED\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":48196170612901,"sku":"nfe1787952190270","price":8.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/antares-2-filter-neutral-density-13---used-nd13-u_1.jpg?v=1787952194"},{"product_id":"explore-scientific-neutral-density-filter-2-nd-09-310240","title":"Explore Scientific Neutral Density Filter 2\" ND 0.9 (310240)","description":"\u003ch1\u003eExplore Scientific Neutral Density Filter 2\" ND 0.9\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4\"(10.2cm) and larger. The ND96 filter may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\n\u003cspan\u003eIn the Box\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eExplore Scientific Neutral Density Filter 2\" ND 0.9\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cspan class=\"speccell\"\u003eExplore Scientific 1-Year Warranty (You need to register)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":48196170645669,"sku":"bmb1787952190357","price":41.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/explore-scientific-neutral-density-filter-2-nd-09-310240_1.webp?v=1787952195"},{"product_id":"astronomik-filter-holder","title":"Astronomik Filter Holder","description":"\u003ch1 data-end=\"297\" data-start=\"118\"\u003eAstronomik Filter Holder\u003c\/h1\u003e\n\u003cp class=\"\" data-end=\"297\" data-start=\"118\"\u003e\u003cbr\u003eThis empty Astronomik filter holder with a knurled edge allows you to mount your own filter glass or replace damaged holders. The filter glass must not exceed a thickness of 2 mm.\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"297\" data-start=\"118\"\u003e \u003c\/p\u003e\n\u003ch3 data-end=\"333\" data-start=\"299\"\u003e\u003cstrong data-end=\"333\" data-start=\"299\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch2 data-end=\"333\" data-start=\"299\"\u003e\u003cstrong data-end=\"333\" data-start=\"299\"\u003e 1.25\"\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-end=\"460\" data-start=\"335\"\u003e\n\u003cli class=\"\" data-end=\"358\" data-start=\"335\"\u003e\n\u003cp class=\"\" data-end=\"358\" data-start=\"337\"\u003eThread: M28.5 x 0.6\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-end=\"401\" data-start=\"359\"\u003e\n\u003cp class=\"\" data-end=\"401\" data-start=\"361\"\u003eLength without external thread: 4.5 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-end=\"460\" data-start=\"402\"\u003e\n\u003cp class=\"\" data-end=\"460\" data-start=\"404\"\u003eThe filter glass must have a diameter of 27.5 ± 0.2 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"493\" data-start=\"462\"\u003e\u003cstrong data-end=\"493\" data-start=\"462\"\u003e2\"\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-end=\"619\" data-start=\"495\"\u003e\n\u003cli class=\"\" data-end=\"517\" data-start=\"495\"\u003e\n\u003cp class=\"\" data-end=\"517\" data-start=\"497\"\u003eThread: M48 x 0.75\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-end=\"560\" data-start=\"518\"\u003e\n\u003cp class=\"\" data-end=\"560\" data-start=\"520\"\u003eLength without external thread: 4.5 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli class=\"\" data-end=\"619\" data-start=\"561\"\u003e\n\u003cp class=\"\" data-end=\"619\" data-start=\"563\"\u003eThe filter glass must have a diameter of 46.6 ± 0.2 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eAstronomik Filter Holder\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eAstronomik 10 Years Warranty\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25\"","offer_id":48196170678437,"sku":"wac1787952192446","price":9.25,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":48196170711205,"sku":"lxd1787952192447","price":13.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/astronomik-filter-holder_1.jpg?v=1787952196"},{"product_id":"antares-125-5-position-manual-filter-wheel-fw5","title":"Antares 1.25\" 5-Position Manual Filter Wheel (FW5)","description":"\u003ch1\u003eAntares 1.25\" 5-Position Manual Filter Wheel\u003c\/h1\u003e\n\u003cdiv class=\"tab-pane fade active in\" aria-expanded=\"true\"\u003e\n\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThis filter wheel will accept (5) 1.25\" filters and has fittings for both 1.25\" visual and M42 camera T2 thread.  Requires 22mm of in-focus, so it may not be suitable for all telescopes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechncial specifications \u003c\/h3\u003e\n\u003ctable style=\"width: 100%; height: 98px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"text-align: center; width: 41.6957%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 55.5217%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"text-align: center; width: 41.6957%; height: 19.6px;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 55.5217%; height: 19.6px;\"\u003e1.25''\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"text-align: center; width: 41.6957%; height: 19.6px;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 55.5217%; height: 19.6px;\"\u003eManual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"text-align: center; width: 41.6957%; height: 19.6px;\"\u003eColor\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 55.5217%; height: 19.6px;\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"text-align: center; width: 41.6957%; height: 19.6px;\"\u003eNet Weight\u003c\/td\u003e\n\u003ctd style=\"text-align: center; width: 55.5217%; height: 19.6px;\"\u003e351.5g \/ 12.4oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e1.25\" 5-Position Manual Filter Wheel\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eAntares 1-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":48196170776741,"sku":"dae1787952197175","price":38.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/antares-125-5-position-manual-filter-wheel-fw5_1.jpg?v=1787952200"},{"product_id":"svbony-sv220-3nm-narrowband-filter-ha-oiii","title":"SVBony SV220 3nm Narrowband Filter Ha \u0026 OIII","description":"\u003ch1\u003eNarrowband Filter 3nm H-Alpha \u0026amp; Oiii SV220\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-narrow 3nm (H-Alpha \u0026amp; OIII) bandwidth, ideal for photographing emission and planetary nebulae;\u003c\/li\u003e\n\u003cli\u003eMinimal halo coating design, effectively blocking excess light and reducing halos;\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePerfectly compatible with full-frame telescopes and cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/w9198b_20250828175857_7509.jpg?v=1757778172\u0026amp;width=700\" alt=\"\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eMinimal Halo Coating Design\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis narrowband filter Adopts multi-layer minimal halo coating technology, it reduces glare and halo interference. It thereby enhances image contrast and color accuracy, presents sharp celestial details against a clean background, and improves the purity of deep-sky photography images.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/w9198b-1_20250828175909_6166.jpg?v=1757778197\u0026amp;width=700\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/w9198b-3_20250828175937_5948.jpg?v=1757778242\u0026amp;width=700\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h3\u003e\n\u003ctable style=\"width: 100.079%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 40.2255%;\"\u003e\u003cstrong\u003e2-inch Version\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 32.5635%;\"\u003e\u003cstrong\u003e1.25-inch Version\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eBandwidth \/ FWHM (H‑α \u0026amp; OIII)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003e~3 nm (ultra‑narrow)\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003e~3 nm ±1 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eThread Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003eM48 × 0.75\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003eM28.5 × 0.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eBarrel \/ Filter Cell Outside Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003eØ50.8 × 7 mm\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003eØ31.75 × 7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eOptical Cut‑off \/ Transmission Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003e300 nm – 1050 nm\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003e300 nm – 1050 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eBlocking \/ Out‑of‑Band Suppression\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003eAverage OD5 (0.001 %)\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003eAverage OD5 (0.001 %)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003ePeak Transmission at Target Lines\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003e≥85 % at H‑α \u0026amp; OIII\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003e≥85 % at H‑α \u0026amp; OIII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eCoating \/ Halo Control\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003eMulti-layer, anti-reflection, minimal halo design\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003eMulti-layer, anti-reflection, minimal halo design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 26.5775%;\"\u003e\u003cstrong\u003eDesign Notes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 40.2255%;\"\u003eSuitable for full-frame sensors; minimal vignetting; optimized for light pollution control and enhanced nebula contrast\u003c\/td\u003e\n\u003ctd style=\"width: 32.5635%;\"\u003eSame features apply; best performance with slower focal ratios (not ultra-fast optics)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"171\" data-end=\"303\"\u003e\n\u003cp data-start=\"173\" data-end=\"303\"\u003e\u003cstrong data-start=\"173\" data-end=\"226\"\u003eSVBONY SV220 3 nm Dual-Band H‑Alpha \u0026amp; OIII Filter\u003c\/strong\u003e\u003cbr data-start=\"226\" data-end=\"229\"\u003e– Available in either \u003cstrong data-start=\"253\" data-end=\"269\"\u003e2-inch (M48)\u003c\/strong\u003e or \u003cstrong data-start=\"273\" data-end=\"294\"\u003e1.25-inch (M28.5)\u003c\/strong\u003e format\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"304\" data-end=\"402\"\u003e\n\u003cp data-start=\"306\" data-end=\"402\"\u003e\u003cstrong data-start=\"306\" data-end=\"341\"\u003eProtective Plastic Storage Case\u003c\/strong\u003e\u003cbr data-start=\"341\" data-end=\"344\"\u003e– Foam-lined interior for secure storage and transport\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"403\" data-end=\"499\"\u003e\n\u003cp data-start=\"405\" data-end=\"499\"\u003e\u003cstrong data-start=\"405\" data-end=\"434\"\u003eMicrofiber Cleaning Cloth\u003c\/strong\u003e\u003cbr data-start=\"434\" data-end=\"437\"\u003e– For safe and scratch-free cleaning of the filter surface\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"500\" data-end=\"600\"\u003e\n\u003cp data-start=\"502\" data-end=\"600\"\u003e\u003cstrong data-start=\"502\" data-end=\"543\"\u003eUser Information Card or Basic Manual\u003c\/strong\u003e\u003cbr data-start=\"543\" data-end=\"546\"\u003e– Filter handling tips and specifications overview\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eSvbony 1-Year Warranty \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Svbony","offers":[{"title":"1.25\"","offer_id":48196170809509,"sku":"llv1787952200083","price":91.72,"currency_code":"USD","in_stock":true},{"title":"2\"","offer_id":48196170842277,"sku":"mdx1787952200084","price":198.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/svbony-sv220-3nm-narrowband-filter-ha-oiii_1.jpg?v=1787952204"},{"product_id":"ioptron-lrgb-imaging-filter-kit-125-3383-lrgb","title":"iOptron LRGB Imaging Filter Kit -1.25\" (3383-LRGB)","description":"\u003ch1\u003e\u003cspan\u003eiOptron LRGB Imaging Filter Kit -1.25\"\u003c\/span\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe LRGB filter set is designed for maximum contrast and has extremely high gradients for clear differentiation of colors. The LRGB filter set divides the spectrum into Red, Green, Blue and Luminance (UV\/IR cut). OIII emission overlaps on blue and green filters with maximum transmission to allow high efficiency and natural color imaging. The gap between green and red filters serves to block out the primary Sodium light pollution line at 589nm and improves color balance and separation.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eWARNING:\u003c\/strong\u003e iOptron filters are not designed for direct solar observation. NEVER use these filters for observing or imaging the Sun, or permanent eye and equipment damage will result\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/3383-LRGB-3T.png?v=1758739456\u0026amp;width=700\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetail\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003e1.25\" Mounted Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003e1.25\" Filter Wheel, such as the iEFW-15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePossible Use\u003c\/td\u003e\n\u003ctd\u003eCan be used with a 1.25\" eyepiece (M28.5x0.6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating\u003c\/td\u003e\n\u003ctd\u003eMultilayer anti-reflective coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Transmission\u003c\/td\u003e\n\u003ctd\u003e95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Flatness\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; λ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30\" (30 arcseconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eiOptron LRGB Imaging Filter Kit -1.25\"\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRed Filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGreen Filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBlue Filter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLuminance Filter (UV\/IR cut)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eiOptron Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":48196170875045,"sku":"mbw1787952202782","price":170.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/ioptron-lrgb-imaging-filter-kit--125-3383-lrgb_1.webp?v=1787952206"},{"product_id":"ioptron-iefw-5-position-electronic-filter-wheel-3381","title":"iOptron iEFW 5-Position Electronic Filter Wheel (3381)","description":"\u003ch1\u003eiOptron iEFW 5-Position Electronic Filter Wheel\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe iOptron iEFW-15 Electronic Filter Wheel provides automated control of up to 5 filters. It works with mounted 1.25\" filters or unmounted 31mm filters. It is powered and controlled through a USB-C type port connected to a computer.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications \u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLight weight, only 220 gm\u003c\/li\u003e\n\u003cli\u003e20mm filter wheel thickness\u003c\/li\u003e\n\u003cli\u003eUSB-C powering and computer connection\u003c\/li\u003e\n\u003cli\u003eAccept mounted 1.25\" filters or unmounted 31mm filters\u003c\/li\u003e\n\u003cli\u003eSmall raised camera mounting threads for better parallelism\u003c\/li\u003e\n\u003cli\u003eASCOM and INDI driver compatible\u003c\/li\u003e\n\u003cli\u003eOne year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eiEFW 5-Position Electronic Filter Wheel for 1.25\" or 31mm Filters\u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp\u003eiOptron One-Year Warranty\u003c\/p\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":48196170973349,"sku":"qzr1787952204675","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/ioptron-iefw-5-position-electronic-filter-wheel-3381_1.webp?v=1787952208"},{"product_id":"svbony-sv220-7nm-dual-band-nebula-filter-sii-oiii-125-2","title":"Svbony SV220 7nm Dual-Band Nebula Filter SII \u0026 OIII (1.25” \/ 2”)","description":"\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003eSvbony SV220 7nm Dual-Band Nebula Filter SII \u0026amp; OIII\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe SV220 SII \u0026amp; OIII  7nm is a Duo Band Filter. It is designed to be used in combination with the SV220 H-Alpha \u0026amp; OIII Duo Band Filter to provide a superior method for achieving the SHO (Hubble Pallet) narrow band colour balance with colour imaging cameras. The SII and OIII Filter provides the missing band data so that owners of colour cameras can achieve the SHO colour balance in their narrow band images. The Duo-band filter (SII+OIII) has a high transmission of over 85% at its center wavelength (500.7nm and 672nm). It can effectively improve the quality of the image by making the sky background of the image darker while maximizing contrast throughout the image and enhancing the contrast of your pictures, thus making it easier to display the details of the stars. In areas with very serious light pollution, this filter can also selectively filter light pollution.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003e1.25inch SII+OIII Dual-Band Filter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1_3ff89093-9901-4d8d-94a0-b491a9932cb2.webp?v=1763152174\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/2_73570da8-e555-41d0-9492-0764546b59c5.webp?v=1763152186\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/3_9ca6757d-620b-4857-bdfe-235b1704f981.webp?v=1763152200\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/4_88f8d051-aea1-4273-8785-5a3f8b09a509.webp?v=1763152214\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/5_c1d5f6c8-a2a9-4f2a-90f6-0f1c67d21f82.webp?v=1763152227\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6_1f2fdcfc-13f3-4e4a-8cb9-64fb346590f2.webp?v=1763152244\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/7_b5151030-b2c3-489d-80e5-824edcc1c795.webp?v=1763152260\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/8_46a0929a-bf5a-48d3-93d0-f556b0b7cda2.webp?v=1763152271\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/9_a104fbca-983e-40b4-9d7f-8007988e4913.webp?v=1763152280\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/10_59521ee9-b87a-4be8-a95e-8a0de620e0cf.webp?v=1763152296\u0026amp;width=700\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003e2 inch SII+OIII Dual-Band Filter\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/1_45e60788-8bad-45e3-910d-98c761936df9.webp?v=1763155185\u0026amp;width=700\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/2_c652fea8-bd26-4f54-9d9f-54ea4bab0dfb.webp?v=1763155256\u0026amp;width=700\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/3_65bcf700-84c2-4491-9f4f-60c7c7965577.webp?v=1763155265\u0026amp;width=700\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/4_27318d54-d87e-40cd-8e3b-7f118d9f2dd1.webp?v=1763155275\u0026amp;width=700\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/5_02887b4e-53aa-4a96-83c4-0e058aedd49f.webp?v=1763155287\u0026amp;width=700\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6_efa1126b-e233-44bc-be58-b2b4d3170bed.webp?v=1763155300\u0026amp;width=700\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/9_c9c52fec-b568-4591-8fe8-6d4e659d0ed4.webp?v=1763155325\u0026amp;width=700\"\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003e2-Inch Specification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003e1.25-Inch Specification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eSV220\u003c\/td\u003e\n\u003ctd\u003eSV220\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eName\u003c\/td\u003e\n\u003ctd\u003eSII \u0026amp; OIII Duo-Band OSC Filter\u003c\/td\u003e\n\u003ctd\u003eSII \u0026amp; OIII Duo-Band OSC Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2-Inch\u003c\/td\u003e\n\u003ctd\u003e1.25-Inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate Thickness\u003c\/td\u003e\n\u003ctd\u003e1.85 mm\u003c\/td\u003e\n\u003ctd\u003e1.80 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture\u003c\/td\u003e\n\u003ctd\u003e44 mm\u003c\/td\u003e\n\u003ctd\u003e26 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength Range\u003c\/td\u003e\n\u003ctd\u003e300–1000 nm\u003c\/td\u003e\n\u003ctd\u003e300–1000 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM\u003c\/td\u003e\n\u003ctd\u003e7 nm\u003c\/td\u003e\n\u003ctd\u003e7 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking\u003c\/td\u003e\n\u003ctd\u003e≥OD5\u003c\/td\u003e\n\u003ctd\u003e≥OD5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Transmittance\u003c\/td\u003e\n\u003ctd\u003e≥88%\u003c\/td\u003e\n\u003ctd\u003e≥88%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Quality\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003ctd\u003e60\/40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Parallelism\u003c\/td\u003e\n\u003ctd\u003e1\/2λ\u003c\/td\u003e\n\u003ctd\u003e1\/2λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread\u003c\/td\u003e\n\u003ctd\u003eM48x0.75\u003c\/td\u003e\n\u003ctd\u003eM28.5x0.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle Thread\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e15–20 g\u003c\/td\u003e\n\u003ctd\u003e7 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003eSVBONY SV220 Narrowband Filter\u003c\/p\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eSvbony 1-Year Warranty \u003c\/p\u003e","brand":"Svbony","offers":[{"title":"7nm SII \u0026 OIII 1.25”","offer_id":48196171006117,"sku":"dvx1787952204812","price":73.8,"currency_code":"USD","in_stock":true},{"title":"7nm SII \u0026 OIII 2”","offer_id":48196171038885,"sku":"alr1787952204813","price":105.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/svbony-sv220-7nm-dual-band-nebula-filter-sii-oiii-125-2_1.webp?v=1787952208"},{"product_id":"antlia-8-el-uhc-pro-visual-enhancer-filter-2-mounted","title":"Antlia 8-EL UHC Pro Visual Enhancer Filter - 2'' Mounted","description":"\u003ch1\u003eAntlia 8-EL UHC Pro Visual Enhancer Filter - 2'' Mounted\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eThe Antlia 8-EL UHC Pro Visual Enhancer filter is a high-\u003c\/span\u003e\u003cspan\u003e-\u003c\/span\u003e\u003cspan\u003eperformance optical filter designed for visual observation of celestial objects.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis filter is designed to combat moderate light pollution while maintaining excellent color balance, making it ideal for visual observation\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan\u003eof\u003c\/span\u003e\u003cspan\u003e emission nebulae, planetary nebulae, and other objects. It selectively enhances key emission lines through its high-transmission design, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 671.6nm (SII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 673.1nm (SII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 486.1nm (H-beta)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 495.9nm (OIII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 500.7nm (OIII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 654.8nm (NII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 658.3nm (NII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 656.3nm (H-alpha)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 671.6nm (SII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e95% Peak transmission at 673.1nm (SII)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe combination of high transmission (\u0026gt;95%) and sodium-light suppression allows observers to perceive fine structural details in Planetary nebula, emission nebula targets, even under moderate light pollution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"http:\/\/20564242.s21i.faiusr.com\/4\/2\/ABUIABAEGAAgv-GkvgYooeKorQUwvgo4gQY.png?width=700\" alt=\"Spectrum Curve Antlia 8-EL UHC Pro Visual Enhancer Filter.png\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1. \u003c\/span\u003e\u003cspan\u003eVisual Recommendations\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1) \u003c\/span\u003e\u003cspan\u003eLarge-Aperture Telescopes: Due to reduced photon capture by the human eye at night\u003c\/span\u003e\u003cspan\u003e，\u003c\/span\u003e\u003cspan\u003ewe recommend using large-aperture telescopes (e.g., 8-inch or larger) to ensure sufficient light throughput. This compensates for the inherent sensitivity drop in low-light conditions while maintaining the filter’s balance between light pollution suppression and target brightness.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2) \u003c\/span\u003e\u003cspan\u003eVisual Enhanced Contrast in Nebulae:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e8-EL\u003c\/span\u003e\u003cspan\u003e（\u003c\/span\u003e\u003cspan\u003e8 emission lines) and target recommendations\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" style=\"width: 100%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEmission lines\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuggested observation targets\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e486.1nm (H-beta)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003eM42 Orion Nebula,NGC 7000 North America Nebula,M16 Eagle Nebula, M8 Lagoon Nebula\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e495.9nm (OIII)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003e-Recommended Nebulae: M57 Ring Nebula,NGC6960 Veil Nebula,NGC6543 Cat's Eye Nebula,NGC6302 Butterfly Nebula\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e500.7nm (OIII)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003eM42 Orion Nebula, M57 Ring Nebula, NGC 6992 Veil Nebula on the east side, IC 2177 Seagull Nebula, M104 Broad-shouldered Cap Galaxy\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e654.8nm (NII)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003eNGC 6960 Veil Nebula, M1 Crab Nebula, M57 Ring Nebula, NGC 6543 Cat's Eye Nebula\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e658.3nm (NII)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003eM42 Orion Nebula, NGC 6960 Veil Nebula, M57 Ring Nebula\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e656.3nm (H-alpha)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003eM42 Orion Nebula, IC434 Horsehead Nebula, NGC7000 North America Nebula, M16 Eagle Nebula, M8 Lagoon Nebula, NGC6960 Veil Nebula\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e671.6nm (SII)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003eM42 Orion Nebula, IC434 Horsehead Nebula, M1 Crab Nebula, M16 Eagle Nebula, M57 Ring Nebula, NGC6543 Cat's Eye Nebula\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"192\" valign=\"top\" style=\"width: 34.2294%;\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e673.1nm (SII)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"404\" valign=\"top\" style=\"width: 65.7706%;\"\u003e\n\u003cp\u003e\u003cspan\u003eM42 Orion Nebula, M1 Cassiopeia Nebula, NGC 6960 Veil Nebula, IC 443 Jellyfish Nebula, M27 Sundial Nebula\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; height: 176.344px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth style=\"width: 64.8014%; height: 19.5938px;\"\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003eAntlia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003eMulti-band (8 emission lines)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003e2″ Mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003eThread\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003eM48 × 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003ePeak Transmission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003e≥95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003eFilter Cell\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003eUltra-thin, black anodized aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003cstrong\u003eMarkings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003eLaser engraved\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 34.8375%; height: 19.5938px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 64.8014%; height: 19.5938px;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cimg src=\"http:\/\/20564242.s21i.faiusr.com\/4\/2\/ABUIABAEGAAgv-GkvgYooeKorQUwvgo4gQY.png?width=700\" alt=\"Spectrum Curve Antlia 8-EL UHC Pro Visual Enhancer Filter.png\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cp\u003eAntlia 3-Year Warranty\u003c\/p\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":48196171202725,"sku":"xvc1787952209964","price":95.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/antlia-8-el-uhc-pro-visual-enhancer-filter---2-mounted_1.jpg?v=1787952213"},{"product_id":"touptek-sho-65nm-filters-for-astrophotography","title":"Touptek SHO 6.5nm Filters for Astrophotography","description":"\u003ch2\u003eTouptek SHO 6.5nm Filters for Astrophotography\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 600; color: #3860ea;\"\u003eNarrowband filters\u003c\/span\u003e are essential accessories in astrophotography used to isolate specific wavelength emission lines and enhance the signal-to-noise ratio of your target—especially for capturing breathtaking emission nebulae.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eToupTek HSO narrowband filters\u003c\/b\u003e are precisely tuned to the three main ionized emission lines found in star-forming regions:\u003cspan style=\"color: #e04156; font-weight: 600;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHα (656.3nm)\u003c\/li\u003e\n\u003cli\u003eSII (671.6nm)\u003c\/li\u003e\n\u003cli\u003eOIII (500.7nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003eBy using these filters, you can effectively block urban light pollution and background stray light, dramatically enhance signal contrast, and bring out incredible detail—empowering you to achieve \u003cb\u003eHubble-like color mixing (SHO synthesis)\u003c\/b\u003e in your astrophotography.\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003ePrecise Band Control \u0026amp; Enhanced Detail Resolution\u003c\/h4\u003e\n\u003cp\u003eThe precise narrowband design effectively suppresses background noise while highlighting the emission structures of different elements, resulting in clearer celestial stratification and enhanced detail gradation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eHα filter: Central wavelength 656.3nm, FWHM 4nm. \u003c\/strong\u003e\u003c\/span\u003eOptimized for hydrogen ionization regions, this filter serves as the primary channel for capturing nebular morphology.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eOIII filter:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e Central wavelength 500.7nm \u003c\/strong\u003e\u003cstrong\u003e(OIII emission line), FWHM 4nm.\u003c\/strong\u003e Designed to reveal high-energy excitation zones, particularly effective for visualizing blue-green nebular details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSII filter: Central wavelength 671.6nm, FWHM 4nm. \u003c\/strong\u003e\u003c\/span\u003eEnhances detection of faint signals and reveals structural stratification through ionized sulfur distribution. When combined with Hα, significantly improves image contrast.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHigh-Quality Quartz Glass, High Transparency and Purity\u003c\/h4\u003e\n\u003cp\u003eThe entire series of ToupTek Astro filters utilize high-quality colorless transparent quartz glass, with \u0026gt;90% high transmittance, high purity, exceptional blue-violet band transmission, and outstanding thermal stability—ideal for various demanding astronomical imaging applications.\u003c\/p\u003e\n\u003ch4\u003eIAD Dense Coating, Durable and Stable\u003c\/h4\u003e\n\u003cp\u003eUsing IAD (Ion Assisted Deposition) coating technology, which is more costly than conventional vacuum evaporation but produces denser and more uniform coatings that are durable, corrosion-resistant, and have superior environmental stability.\u003c\/p\u003e\n\u003ch4\u003ePrecision Coating, Significantly Suppresses Halos\u003c\/h4\u003e\n\u003cp\u003eToupTek Astro filters employ a proprietary multi-layer system: a single-sided cutoff coating, front surface AR anti-reflection coating, and edge blackening treatment. This combination effectively minimizes internal reflections and stray light while ensuring coating integrity and extended service life.\u003c\/p\u003e\n\u003ch4\u003eHigh Optical Cutoff Depth, Restores Natural Colors\u003c\/h4\u003e\n\u003cp\u003eAll channel filters have a cutoff depth of OD≥5.0, effectively blocking non-target spectral regions, avoiding band crosstalk and color cast, resulting in accurate and natural color reproduction.\u003c\/p\u003e\n\u003ch4\u003eMatte Black Edge Coating, Easy Installation\u003c\/h4\u003e\n\u003cp\u003eThe filter edge is coated with a black matte treatment to minimize stray light, which ensures transmittance, reduces glare, and enhances image contrast.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1.25\" \u0026amp; 2\" filters: Feature threaded aluminum alloy frames for direct screw-in installation, ensuring fast and tool-free mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHighly Compatible\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll filters use a single-piece, glue-free structure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e36mm: Recommended for APS-C and smaller cameras.\u003c\/li\u003e\n\u003cli\u003e1.25\": Recommended for cameras with a 1-inch or smaller sensor.\u003c\/li\u003e\n\u003cli\u003e2\": Recommended for full-frame and smaller cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompatible with various brands on the market featuring 7-hole 36mm, 8-hole 1.25-inch, and 5-hole 2-inch electric filter wheels, offering a wider range of compatibility options.\u003c\/p\u003e\n\u003ch4 style=\"margin-top: 12px;\"\u003eSpectrum\u003c\/h4\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HSO-Spectrogram-02.webp?v=1772825293\u0026amp;width=700\"\u003e\u003c\/h3\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003e\u003cbr\u003e\u003c\/h3\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003e1.25” \/ 2”\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Thickness\u003c\/td\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH-alpha filter\u003c\/td\u003e\n\u003ctd\u003eCentral wavelength 656.3nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSII filter\u003c\/td\u003e\n\u003ctd\u003eCentral wavelength 671.6nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOIII filter\u003c\/td\u003e\n\u003ctd\u003eCentral wavelength 500.7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmittance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM (1.25” \u0026amp; 2”)\u003c\/td\u003e\n\u003ctd\u003eH-alpha (6.5nm) \/ SII (6.5nm) \/ OIII (6.5nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Material\u003c\/td\u003e\n\u003ctd\u003eQuartz glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Material\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Treatment\u003c\/td\u003e\n\u003ctd\u003eDouble-sided high-precision optical polishing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating Technology\u003c\/td\u003e\n\u003ctd\u003eIAD (Ion Assisted Deposition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating System Design\u003c\/td\u003e\n\u003ctd\u003eAR anti-reflection coating + quartz glass + precision cutoff coating layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOD\u003c\/td\u003e\n\u003ctd\u003e≥5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003eIn the box\u003c\/h3\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003e6.5 nm SHO Filters, in selected size : \u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e1.25''\u003c\/li\u003e\n\u003cli\u003e2''\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003e\n\u003ch3\u003e\n\u003cspan\u003eWarranty \u0026amp; Manual\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong data-end=\"650\" data-start=\"615\"\u003eToupTek 2 year Warranty \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Touptek","offers":[{"title":"1.25'' \/ SHO Filter Set","offer_id":48196171235493,"sku":"yip1787952212874","price":199.02,"currency_code":"USD","in_stock":true},{"title":"2'' \/ Ha","offer_id":48196171268261,"sku":"rht1787952212875","price":128.79,"currency_code":"USD","in_stock":true},{"title":"2'' \/ SII","offer_id":48196171301029,"sku":"tuc1787952212876","price":125.16,"currency_code":"USD","in_stock":true},{"title":"2'' \/ OIII","offer_id":48196171333797,"sku":"gcb1787952212877","price":139.67,"currency_code":"USD","in_stock":true},{"title":"2'' \/ SHO Filter Set","offer_id":48196171366565,"sku":"xck1787952212878","price":401.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/touptek-sho-65nm-filters-for-astrophotography_1.webp?v=1787952217"},{"product_id":"touptek-sho-4nm-filters-for-astrophotography","title":"Touptek SHO 4nm Filters for Astrophotography","description":"\u003ch2\u003eTouptek SHO 4nm Filters for Astrophotography\u003c\/h2\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: 600; color: #3860ea;\"\u003eNarrowband filters\u003c\/span\u003e are essential accessories in astrophotography used to isolate specific wavelength emission lines and enhance the signal-to-noise ratio of your target—especially for capturing breathtaking emission nebulae.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eToupTek HSO narrowband filters\u003c\/b\u003e are precisely tuned to the three main ionized emission lines found in star-forming regions:\u003cspan style=\"color: #e04156; font-weight: 600;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHα (656.3nm)\u003c\/li\u003e\n\u003cli\u003eSII (671.6nm)\u003c\/li\u003e\n\u003cli\u003eOIII (500.7nm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003eBy using these filters, you can effectively block urban light pollution and background stray light, dramatically enhance signal contrast, and bring out incredible detail—empowering you to achieve \u003cb\u003eHubble-like color mixing (SHO synthesis)\u003c\/b\u003e in your astrophotography.\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003ePrecise Band Control \u0026amp; Enhanced Detail Resolution\u003c\/h4\u003e\n\u003cp\u003eThe precise narrowband design effectively suppresses background noise while highlighting the emission structures of different elements, resulting in clearer celestial stratification and enhanced detail gradation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eHα filter: Central wavelength 656.3nm, FWHM 4nm. \u003c\/strong\u003e\u003c\/span\u003eOptimized for hydrogen ionization regions, this filter serves as the primary channel for capturing nebular morphology.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eOIII filter:\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003e Central wavelength 500.7nm \u003c\/strong\u003e\u003cstrong\u003e(OIII emission line), FWHM 4nm.\u003c\/strong\u003e Designed to reveal high-energy excitation zones, particularly effective for visualizing blue-green nebular details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eSII filter: Central wavelength 671.6nm, FWHM 4nm. \u003c\/strong\u003e\u003c\/span\u003eEnhances detection of faint signals and reveals structural stratification through ionized sulfur distribution. When combined with Hα, significantly improves image contrast.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHigh-Quality Quartz Glass, High Transparency and Purity\u003c\/h4\u003e\n\u003cp\u003eThe entire series of ToupTek Astro filters utilize high-quality colorless transparent quartz glass, with \u0026gt;90% high transmittance, high purity, exceptional blue-violet band transmission, and outstanding thermal stability—ideal for various demanding astronomical imaging applications.\u003c\/p\u003e\n\u003ch4\u003eIAD Dense Coating, Durable and Stable\u003c\/h4\u003e\n\u003cp\u003eUsing IAD (Ion Assisted Deposition) coating technology, which is more costly than conventional vacuum evaporation but produces denser and more uniform coatings that are durable, corrosion-resistant, and have superior environmental stability.\u003c\/p\u003e\n\u003ch4\u003ePrecision Coating, Significantly Suppresses Halos\u003c\/h4\u003e\n\u003cp\u003eToupTek Astro filters employ a proprietary multi-layer system: a single-sided cutoff coating, front surface AR anti-reflection coating, and edge blackening treatment. This combination effectively minimizes internal reflections and stray light while ensuring coating integrity and extended service life.\u003c\/p\u003e\n\u003ch4\u003eHigh Optical Cutoff Depth, Restores Natural Colors\u003c\/h4\u003e\n\u003cp\u003eAll channel filters have a cutoff depth of OD≥5.0, effectively blocking non-target spectral regions, avoiding band crosstalk and color cast, resulting in accurate and natural color reproduction.\u003c\/p\u003e\n\u003ch4\u003eMatte Black Edge Coating, Easy Installation\u003c\/h4\u003e\n\u003cp\u003eThe filter edge is coated with a black matte treatment to minimize stray light, which ensures transmittance, reduces glare, and enhances image contrast.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e36mm filters: The telescope-facing side has an inward-extending blackened border for quick orientation identification.\u003c\/li\u003e\n\u003cli\u003e1.25\" \u0026amp; 2\" filters: Feature threaded aluminum alloy frames for direct screw-in installation, ensuring fast and tool-free mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eHighly Compatible\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll filters use a single-piece, glue-free structure.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e36mm: Recommended for APS-C and smaller cameras.\u003c\/li\u003e\n\u003cli\u003e1.25\": Recommended for cameras with a 1-inch or smaller sensor.\u003c\/li\u003e\n\u003cli\u003e2\": Recommended for full-frame and smaller cameras.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompatible with various brands on the market featuring 7-hole 36mm, 8-hole 1.25-inch, and 5-hole 2-inch electric filter wheels, offering a wider range of compatibility options.\u003c\/p\u003e\n\u003ch4 style=\"margin-top: 12px;\"\u003eSpectrum\u003c\/h4\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/HSO-Spectrogram-01.webp?v=1772823218\u0026amp;width=700\" alt=\"\"\u003e\u003c\/h3\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003e\u003c\/h3\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003e36mm (unframed) \/ 2”\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Thickness\u003c\/td\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eH-alpha filter\u003c\/td\u003e\n\u003ctd\u003eCentral wavelength 656.3nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSII filter\u003c\/td\u003e\n\u003ctd\u003eCentral wavelength 671.6nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOIII filter\u003c\/td\u003e\n\u003ctd\u003eCentral wavelength 500.7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmittance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFWHM (36mm)\u003c\/td\u003e\n\u003ctd\u003eH-alpha (4nm) \/ SII (4nm) \/ OIII (4nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Material\u003c\/td\u003e\n\u003ctd\u003eQuartz glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Material\u003c\/td\u003e\n\u003ctd\u003eAluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface Treatment\u003c\/td\u003e\n\u003ctd\u003eDouble-sided high-precision optical polishing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating Technology\u003c\/td\u003e\n\u003ctd\u003eIAD (Ion Assisted Deposition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCoating System Design\u003c\/td\u003e\n\u003ctd\u003eAR anti-reflection coating + quartz glass + precision cutoff coating layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOD\u003c\/td\u003e\n\u003ctd\u003e≥5.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003ch3 style=\"margin-top: 12px;\"\u003eIn the box\u003c\/h3\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003e4nm SHO Filters, in selected size : \u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e36mm\u003c\/li\u003e\n\u003cli\u003e2''\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"margin-top: 12px;\"\u003e\n\u003ch3\u003e\n\u003cspan\u003eWarranty \u0026amp; Manual\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong data-end=\"650\" data-start=\"615\"\u003eToupTek 2 year Warranty \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Touptek","offers":[{"title":"36mm \/ Ha","offer_id":48196171399333,"sku":"znm1787952213501","price":117.9,"currency_code":"USD","in_stock":true},{"title":"36mm \/ SII","offer_id":48196171432101,"sku":"leu1787952213502","price":110.65,"currency_code":"USD","in_stock":true},{"title":"36mm \/ OIII","offer_id":48196171464869,"sku":"ibs1787952213503","price":143.3,"currency_code":"USD","in_stock":true},{"title":"36mm \/ SHO Filter Set","offer_id":48196171497637,"sku":"zso1787952213504","price":320.04,"currency_code":"USD","in_stock":true},{"title":"2'' \/ Ha","offer_id":48196171530405,"sku":"kia1787952213505","price":160.92,"currency_code":"USD","in_stock":true},{"title":"2'' \/ SII","offer_id":48196171563173,"sku":"fhg1787952213506","price":131.28,"currency_code":"USD","in_stock":true},{"title":"2'' \/ OIII","offer_id":48196171595941,"sku":"xdb1787952213507","price":150.34,"currency_code":"USD","in_stock":true},{"title":"2'' \/ SHO Filter Set","offer_id":48196171628709,"sku":"cve1787952213508","price":412.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/0162\/9093\/files\/touptek-sho-4nm-filters-for-astrophotography_1.webp?v=1787952217"}],"url":"https:\/\/www.urbanwares.shop\/collections\/filters.oembed","provider":"My Store","version":"1.0","type":"link"}