{"title":"SVBONY Visual \u0026 Planetary Filters","description":"\u003cp\u003eSVBONY's visual and planetary range includes the SV155 7-piece planetary and Moon filter set, Moon and SV139 neutral density filters, the SV231 colour correction (Fringe Killer) filter, and the SV128 variable and 1.25\" linear polarizers. For planetary imaging, the SV183 685nm IR-pass filter reduces the effect of atmospheric seeing on fine detail. Part of \u003ca href=\"\/collections\/visual-planetary-filters\"\u003eMoon, Planetary \u0026amp; Visual Filters\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"svbony-sv231-1-25-colour-correction-filter","title":"SVBONY SV231 1.25″ Colour Correction (Fringe Killer) Filter","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384039870630272163600900.jpg?v=1791667886\" alt=\"SVBONY SV231 colour correction filter key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV231 is a 1.25″ colour correction filter, often called a fringe killer. It blocks the defocused blue light and the red and infrared light above about 700 nm that small achromatic refractors do not bring to a common focus, which reduces the purple halo around bright targets. SVBONY rates peak transmittance above 95%, with blocking above OD2 across a 300–1200 nm range. The filter has a 1 mm substrate, 26 mm clear aperture and M28.5 x 0.6 thread, and weighs 4.2 g.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384040463105923067390337.jpg?v=1791667886\" alt=\"SVBONY SV231 filter correcting chromatic aberration\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you observe or image the Moon and planets through an achromatic refractor and want to reduce the violet fringing around bright limbs and planets, or if you image with a CMOS camera and want infrared kept out of the focus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromatic aberration correction:\u003c\/strong\u003e trims the out-of-focus blue and the red\/IR light responsible for fringing in achromats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfrared blocking:\u003c\/strong\u003e cuts light above about 700 nm, so camera images focus sharper.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh transmission:\u003c\/strong\u003e peak transmittance above 95% in the pass band.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAR-coated optical surfaces\u003c\/strong\u003e with 60\/40 surface quality and 1\/2λ parallelism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 1.25″ thread:\u003c\/strong\u003e M28.5 x 0.6, for eyepieces, diagonals and camera nosepieces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384040463159834249402248.jpg?v=1791667886\" alt=\"SVBONY SV231 filter blocking light pollution and reducing noise\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384040463191299592677356.jpg?v=1791667886\" alt=\"SVBONY SV231 filter UV and IR cut\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384040463281138404142331.jpg?v=1791667886\" alt=\"SVBONY SV231 filter AR coating\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing and imaging:\u003c\/strong\u003e crisper crater edges with less colour halo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanetary observing and imaging:\u003c\/strong\u003e Jupiter, Saturn, Mars and Venus through achromats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright stars and double stars\u003c\/strong\u003e where violet fringing is most visible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera projection:\u003c\/strong\u003e SVBONY notes it can sit well ahead of the focal point without loss of sharpness.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387089274842638825968173.jpg?v=1791667886\" alt=\"SVBONY SV231 filter thread design\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384040987000856411275509.jpg?v=1791667886\" alt=\"SVBONY SV231 filter for digital camera focus photography\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e M28.5 x 0.6, the standard 1.25″ filter thread on eyepieces, diagonals and camera nosepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSVBONY telescopes:\u003c\/strong\u003e SVBONY shows the SV231 in use with the SV503 ED and SV48P refractors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras:\u003c\/strong\u003e CCD and CMOS planetary cameras, threaded on the 1.25″ nosepiece.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinoculars:\u003c\/strong\u003e SVBONY notes it can be used as a single filter in front of a binocular.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384040943988666599969201.jpg?v=1791667886\" alt=\"SVBONY SV231 filter used with the SV503 ED telescope\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6384040946168364737384967.jpg?v=1791667886\" alt=\"SVBONY SV231 filter used with the SV48P telescope\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e this listing is the 1.25″ filter. SVBONY also makes a 2″ M48 version.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour cast:\u003c\/strong\u003e removing part of the blue and red spectrum gives a slight tint, which is the trade for reduced fringing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurpose:\u003c\/strong\u003e it reduces fringing in achromats rather than eliminating it; apochromatic refractors have little fringing to correct.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a light-pollution filter for deep sky:\u003c\/strong\u003e its strength is bright lunar and planetary targets.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It threads into the barrel of a 1.25″ eyepiece, the nosepiece of a diagonal, or a camera nosepiece by hand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work for visual observing and imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. It is used at the eyepiece and in front of planetary cameras.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need it with an apochromatic refractor?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eUsually not. Apochromats already bring the colours to a common focus; the SV231 is aimed at achromats.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan it replace a UV\/IR cut filter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt blocks infrared above about 700 nm, which overlaps with a UV\/IR cut filter, and also trims blue light that an achromat leaves out of focus.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 1.25″ M28.5 colour correction filter that trims defocused blue and red\/IR light, for cleaner lunar, planetary and bright-star views and images through achromatic refractors.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67721435152495,"sku":"W9186A","price":44.1,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9186A-0_20251231143149_2056.webp?v=1791665384"},{"product_id":"svbony-sv139-1-25-nd-moon-filter","title":"SVBONY SV139 1.25″ ND Neutral Density Moon Filter","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386121617552700578996694.jpg?v=1791669936\" alt=\"SVBONY SV139 1.25″ ND moon filter key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV139 is a 1.25″ neutral density filter for lunar observing. A neutral density filter dims the whole image evenly across the spectrum, so the Moon becomes comfortable to look at without taking on a green or yellow cast. This listing is the ND0.6 density (item W9108A), which passes 25% of the incoming light and is the density SVBONY pairs with a waxing crescent Moon. The filter is optical glass in a 2 mm aluminium cell with a standard M28.5 x 0.6 thread.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386121618573407683557384.jpg?v=1791669936\" alt=\"SVBONY SV139 neutral density filter overview panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you observe the Moon visually and find the view glaring, particularly through a larger-aperture telescope, and want to cut the brightness while keeping the Moon's natural grey tones.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeutral density:\u003c\/strong\u003e reduces brightness evenly without shifting colour balance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eND0.6, 25% transmission:\u003c\/strong\u003e a moderate reduction suited to the thinner lunar phases.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 1.25″ thread:\u003c\/strong\u003e M28.5 x 0.6, so it threads into the barrel of any 1.25″ eyepiece or diagonal nosepiece with filter threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlim 2 mm cell:\u003c\/strong\u003e aluminium frame with a metal thread and an optical glass element.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386121619688347081092840.jpg?v=1791669936\" alt=\"SVBONY SV139 ND filter feature panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386121621036001007528051.jpg?v=1791669936\" alt=\"SVBONY SV139 ND filter construction detail\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual lunar observing\u003c\/strong\u003e around crescent phases, where SVBONY matches ND0.6.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright-target viewing\u003c\/strong\u003e where reduced glare makes surface detail easier to follow.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSVBONY makes the SV139 in four densities and matches each to a Moon phase: ND0.6 (25%) for a waxing crescent, ND0.9 (12.5%) for first and last quarter, ND1.2 (6.25%) for waxing and waning gibbous, and ND3.0 (0.1%) for the full Moon.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386121622063114053507452.jpg?v=1791669936\" alt=\"SVBONY SV139 ND filter densities matched to Moon phases\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386121623149992628888176.jpg?v=1791669936\" alt=\"SVBONY SV139 ND filter transmission panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e any 1.25″ eyepiece or accessory with standard M28.5 x 0.6 filter threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStacking:\u003c\/strong\u003e the cell is threaded, so it can be combined with other 1.25″ filters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386121624091991109313103.jpg?v=1791669936\" alt=\"SVBONY SV139 ND filter threaded into a 1.25″ eyepiece\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDensity:\u003c\/strong\u003e this listing is ND0.6. The ND0.9, ND1.2 and ND3.0 versions are separate densities; if you would like one of those, get in touch and we will order it for you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a solar filter:\u003c\/strong\u003e the SV139 is made for the Moon and is not designed for viewing the Sun.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It threads into the bottom of a 1.25″ eyepiece barrel before the eyepiece goes into the diagonal or focuser.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it change the colour of the Moon?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. A neutral density filter reduces brightness evenly, so the Moon keeps its natural tones.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich density should I choose?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSVBONY's guide is ND0.6 for a crescent, ND0.9 for quarter phases, ND1.2 for gibbous phases and ND3.0 for the full Moon. Larger apertures gather more light, so a denser filter can help at the same phase.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 1.25″ ND0.6 moon filter that passes 25% of the light, threads into a standard eyepiece, and takes the glare off the Moon without altering its colour.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"ND0.6","offer_id":67722188030063,"sku":"W9108A","price":13.55,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/W9108A-0_20251231145316_7077.webp?v=1791669936"},{"product_id":"svbony-1-25-moon-filter","title":"SVBONY 1.25″ Moon Filter","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9114l_20250807103226_4249.jpg?v=1791670057\" alt=\"SVBONY F9114L 1.25″ moon filter for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY F9114L is a 1.25″ moon filter in a metal, threaded cell. It cuts the glare of the bright Moon so craters, rilles and terminator detail are easier to hold, much as sunglasses do in daylight. The blue-tinted glass is 1.85 mm thick in a standard M28.5 x 0.6 cell, threaded on both sides so it can stack with other filters, and it comes in a plastic storage box.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you observe the Moon through a 1.25″ eyepiece and find it uncomfortably bright, especially around full Moon or with a large-aperture telescope. It also helps on bright planets and on daytime terrestrial views over sand or snow.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9114a-1_20250807103225_8115_20260810173100_6025.webp?v=1791670055\" alt=\"SVBONY moon filter family image for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlare reduction:\u003c\/strong\u003e lowers lunar brightness and raises contrast for surface detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContrast on bright objects:\u003c\/strong\u003e SVBONY describes it as passing much of the visible spectrum while improving contrast on the Moon and planets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuppresses street-light wavelengths:\u003c\/strong\u003e SVBONY notes it filters low-pressure sodium and similar lighting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal threaded cell:\u003c\/strong\u003e M28.5 x 0.6, threaded both sides for stacking with other 1.25″ filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e anodised housing supplied in a plastic case.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9114a-2_20250807103226_2387.jpg?v=1791670056\" alt=\"SVBONY moon filter family image for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing:\u003c\/strong\u003e comfortable viewing of the Moon at all phases, particularly near full.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright planets:\u003c\/strong\u003e Venus and Jupiter at moderate power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaytime terrestrial viewing:\u003c\/strong\u003e reduced glare over bright sand or snow.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9114a-4_20250807103226_2383.jpg?v=1791670056\" alt=\"SVBONY moon filter family image for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e M28.5 x 0.6, the standard 1.25″ filter thread on eyepieces and diagonals (31.7 mm caliber).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStacking:\u003c\/strong\u003e the double-sided thread allows it to sit with a colour or light pollution filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ version:\u003c\/strong\u003e SVBONY also makes it in 2″ (F9114A, M48 x 0.75).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9114a-3_20250807103226_4237.jpg?v=1791670056\" alt=\"SVBONY moon filter family image for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1 x 1.25″ moon filter (F9114L)\u003c\/li\u003e\n\u003cli\u003e1 x plastic storage box\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a solar filter:\u003c\/strong\u003e SVBONY states it is not suitable for viewing the Sun. Solar observing needs a dedicated full-aperture solar filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTinted view:\u003c\/strong\u003e the blue glass adds a slight colour tint to the Moon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e SVBONY does not publish a weight for this filter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It threads by hand into the bottom of any 1.25″ eyepiece or the nosepiece of a 1.25″ diagonal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it with other filters?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The cell is threaded on both sides, so it stacks with other 1.25″ filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it to look at the Sun?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It is a lunar and planetary filter only; SVBONY states it is not suitable for solar viewing.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 1.25″ M28.5 moon filter in a stackable metal cell that takes the glare off the Moon and bright planets for comfortable, higher-contrast viewing.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"1.25″","offer_id":67722214506607,"sku":"F9114L","price":16.23,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9114l_20250807103226_4249.jpg?v=1791670057"},{"product_id":"svbony-1-25-linear-polarizer-filter","title":"SVBONY 1.25″ Linear Polarizer Filter","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/F9165A-0_20251231144915_3904.webp?v=1791670066\" alt=\"SVBONY F9165A 1.25″ linear polarizer filter for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY F9165A is a 1.25″ linear polarizer filter in an aluminium M28.5 x 0.6 cell, 2.4 mm thick. It dims the view of bright objects to increase contrast at the eyepiece, and SVBONY uses neutral-coloured optical glass so the Moon keeps its natural colour. Each filter is individually precision ground and polished.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you observe or photograph the Moon and bright planets through a 1.25″ eyepiece or imaging train and want lower glare without the colour tint of a blue moon filter.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9165a--7-_20250806193227_5333.jpg?v=1791670066\" alt=\"SVBONY F9165A 1.25″ linear polarizer filter for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlare reduction:\u003c\/strong\u003e dims the Moon for more comfortable, longer observing sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeutral colour:\u003c\/strong\u003e neutral-coloured optical glass keeps the Moon's natural colour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision optics:\u003c\/strong\u003e individually ground and highly polished optical glass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium cell:\u003c\/strong\u003e standard M28.5 x 0.6 thread, 2.4 mm thick.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing:\u003c\/strong\u003e more contrast on craters and terminator detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright planets:\u003c\/strong\u003e lower glare on Venus and Jupiter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar and planetary photography:\u003c\/strong\u003e SVBONY notes it enhances lunar and planetary contrast in photographic images.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/4_20250806193229_6023.jpg?v=1791670066\" alt=\"SVBONY linear polarizer filter for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e M28.5 x 0.6, for 1.25″ eyepieces, diagonals and nosepieces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ version:\u003c\/strong\u003e SVBONY also makes it in 2″ (F9165B, M48 x 0.75).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable dimming:\u003c\/strong\u003e a single linear polarizer gives a fixed reduction. Pairing two polarizers and rotating one against the other is the usual way to get adjustable dimming.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9165b2_20250806193227_1291.jpg?v=1791670066\" alt=\"SVBONY linear polarizer filter family image for lunar and planetary observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomated cameras:\u003c\/strong\u003e SVBONY notes these filters are generally not suited to highly automated digital cameras, whose metering and autofocus can be affected by polarized light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a solar filter:\u003c\/strong\u003e it is for the Moon and planets only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e SVBONY does not publish a weight for this filter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It threads by hand into the filter thread of a 1.25″ eyepiece or diagonal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is it different from a moon filter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA blue moon filter adds a colour tint. The polarizer uses neutral glass, so the Moon's colour is unchanged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for imaging?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, for lunar and planetary imaging with astronomy cameras. Highly automated consumer cameras may not meter correctly through it.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 1.25″ M28.5 linear polarizer with neutral optical glass in an aluminium cell, for glare-free, natural-colour views of the Moon and bright planets.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"1.25″","offer_id":67722216734831,"sku":"F9165A","price":22.79,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/F9165A-0_20251231144915_3904.webp?v=1791670066"},{"product_id":"svbony-sv155-7-piece-planetary-moon-filter-set","title":"SVBONY SV155 1.25″ 7-Piece Planetary and Moon Filter Set","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385915735575564992805852.jpg?v=1791670152\" alt=\"SVBONY SV155 7-piece filter set overview\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV155 is a set of seven 1.25″ filters for lunar and planetary observing: five Wratten-numbered colour filters (#12 deep yellow, #21 orange, #23A bright red, #56 bright green and #82A light blue), a moon filter and a CPL (circular polarising) filter. Each sits in a 2 mm aluminium cell with standard M28.5 x 0.6 threads top and bottom, so they thread into a 1.25″ eyepiece and can be stacked.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9135a-1_20250807105857_2601_20260810135632_2531.webp?v=1791670151\" alt=\"SVBONY SV155 seven 1.25″ filters\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you observe the Moon and planets visually and want to bring out surface and atmospheric features that colour filters isolate, or to tame the brightness of the Moon.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeven filters:\u003c\/strong\u003e five planetary colour filters, a moon filter and a CPL filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 1.25″ threads:\u003c\/strong\u003e M28.5 x 0.6, fitting 1.25″ eyepieces and accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStackable cells:\u003c\/strong\u003e threaded on both sides.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAluminium frames, optical glass.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385915854547283857027548.jpg?v=1791670152\" alt=\"SVBONY SV155 filters with standard 1.25″ M28.5 x 0.6 threads\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eSVBONY's guide to each filter:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e#21 orange:\u003c\/strong\u003e raises contrast between light and dark areas and helps show Jupiter's Great Red Spot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#23A red:\u003c\/strong\u003e sharpens boundaries on Mars, belt contrast on Jupiter, and surface detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#56 green:\u003c\/strong\u003e enhances frost patches, surface fog and polar features on Mars, Saturn's rings, Jupiter's belts and the Moon.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#12 yellow:\u003c\/strong\u003e helps show Mars's polar caps and clouds, and red and orange features on Jupiter and Saturn.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e#82A blue:\u003c\/strong\u003e brings out Martian clouds, lunar contrast, Saturn's belts and polar regions, and bright areas on Jupiter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoon filter:\u003c\/strong\u003e reduces the glare of a bright Moon so surface detail is easier to see.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCPL filter:\u003c\/strong\u003e reduces polarised light to improve contrast on the Moon and planets.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385915843648575098953101.jpg?v=1791670152\" alt=\"SVBONY SV155 moon filter threaded into an eyepiece\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6385915856405922831073581.jpg?v=1791670152\" alt=\"SVBONY SV155 filter set detail\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e 1.25″ eyepieces, diagonals and accessories with M28.5 x 0.6 filter threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStacking:\u003c\/strong\u003e filters can be combined, for example a colour filter with the moon filter.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9135a-2_20250807105857_1277.jpg?v=1791670152\" alt=\"SVBONY SV155 filter set close-up\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e#12 deep yellow filter\u003c\/li\u003e\n\u003cli\u003e#21 orange filter\u003c\/li\u003e\n\u003cli\u003e#23A bright red filter\u003c\/li\u003e\n\u003cli\u003e#56 bright green filter\u003c\/li\u003e\n\u003cli\u003e#82A light blue filter\u003c\/li\u003e\n\u003cli\u003eCPL filter\u003c\/li\u003e\n\u003cli\u003eMoon filter\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisual filters:\u003c\/strong\u003e the set is designed for visual observing; darker filters such as #23A work best with larger apertures, where there is more light to spare.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.25″ only:\u003c\/strong\u003e the cells fit 1.25″ threads, not 2″.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Each filter threads into the bottom of a 1.25″ eyepiece barrel.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich filter should I start with on Jupiter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSVBONY suggests orange (#21) for the Great Red Spot and red (#23A) for belt contrast; blue (#82A) brings out the brighter zones.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use the moon filter with a colour filter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes. The cells are threaded on both sides for stacking.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: seven threaded 1.25″ filters — five planetary colours, a moon filter and a CPL — that give you a contrast tool for each of the bright planets and the Moon.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722234921071,"sku":"F9135A","price":38.46,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9135a-1_20250807105857_2601_20260810135632_2531.webp?v=1791670151"},{"product_id":"svbony-sv128-variable-polarizing-filter","title":"SVBONY SV128 Variable Polarizing Filter","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6369457387258762068092748.jpg?v=1791669867\" alt=\"SVBONY SV128 variable polarizing filter key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV128 is a variable polarizing filter that threads onto the barrel of a 1.25″ eyepiece. It uses two polarizing elements in an aluminium cell: rotating one against the other sets the light transmission anywhere from 1% to 40%, so you can dim the Moon or a bright planet to a comfortable level without swapping filters. This listing is the 1.25″ version (F9147A), 2.4 mm thick with an M28.5 × 0.6 thread.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6372982204161934778497744.jpg?v=1791669867\" alt=\"SVBONY SV128 variable polarizing filter construction\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if the full Moon or a bright planet is uncomfortably glaring in your eyepiece — common with larger apertures — and you want to dial the brightness to suit the target, the phase or your eyes, rather than settle for a fixed neutral-density value.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable 1%–40% transmission:\u003c\/strong\u003e rotate the housing to set the brightness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual polarizing elements:\u003c\/strong\u003e optical glass in an aluminium frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM28.5 × 0.6 thread:\u003c\/strong\u003e screws onto standard 1.25″ eyepiece barrels.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSlim 2.4 mm cell.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6372982388163665792036764.jpg?v=1791669868\" alt=\"SVBONY SV128 variable polarizing filter adjustable transmission\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar observing:\u003c\/strong\u003e cut glare around full and gibbous phases to bring out surface contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBright planets:\u003c\/strong\u003e tame Venus and Jupiter in large apertures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerrestrial viewing:\u003c\/strong\u003e reduce glare from bright sand, snow or water.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9147a-1_20250807110332_7113_20260822135307_6638.webp?v=1791670285\" alt=\"SVBONY SV128 1.25 inch variable polarizing filter for lunar and bright planet observing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEyepieces:\u003c\/strong\u003e threads onto most 1.25″ eyepieces with the standard M28.5 × 0.6 filter thread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter drawers:\u003c\/strong\u003e SVBONY notes it is too thick for SV226 filter drawers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ version:\u003c\/strong\u003e SVBONY also makes the SV128 in 2″ (F9147B, M48 × 0.75, 4.8 mm) — contact us if you need that size.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9147a-2_20250807110332_9920.jpg?v=1791670286\" alt=\"SVBONY SV128 1.25 inch variable polarizing filter dual polarizing elements for Moon viewing\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a solar filter:\u003c\/strong\u003e it is not suitable for viewing the Sun under any setting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras:\u003c\/strong\u003e polarization affects metering and autofocus, so SVBONY describes it as generally unsuitable for highly automated digital cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e SVBONY does not publish the filter's weight.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. Thread it onto the bottom of your eyepiece barrel, insert the eyepiece, then rotate the filter housing until the brightness looks right.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow dark does it go?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSVBONY quotes a transmission range of 1% to 40%, set by rotating the housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it to look at the Sun?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It is for the Moon, bright planets and bright terrestrial scenes only; solar viewing requires a dedicated full-aperture solar filter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit my filter drawer?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNot an SV226 drawer — SVBONY notes it is too thick. It is designed to thread onto eyepiece barrels.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 1.25″ dual-element polarizing filter that dials transmission from 1% to 40%, giving comfortable, glare-free views of the Moon and bright planets.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"1.25″","offer_id":67722263330927,"sku":"F9147A","price":25.64,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/f9147a-1_20250807110332_7113_20260822135307_6638.webp?v=1791670285"},{"product_id":"svbony-sv183-685nm-ir-pass-filter","title":"SVBONY SV183 1.25″ 685nm IR Pass Filter for Planetary Imaging","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386124298323411876294019.jpg?v=1791669909\" alt=\"SVBONY SV183 685nm IR pass filter key visual\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe SVBONY SV183 is a 1.25″ infrared pass filter for lunar and planetary imaging. It blocks visible light below its 670 nm cut-on (OD2 from 400–660 nm) and transmits more than 95% from 673 to 1100 nm. Longer wavelengths are less disturbed by atmospheric turbulence, so imaging in near-IR steadies the view in average seeing and raises contrast on the Moon and planets. The glass is SCHOTT B260, 1.1 mm thick, in a 6061-T6 aluminium cell with an M28.5×0.6 thread and a 26 mm clear aperture.\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387004704652440115597139.jpg?v=1791669908\" alt=\"SVBONY SV183 685nm IR pass filter for planetary imaging feature panel\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you image the Moon and planets with a camera that is sensitive in the near-infrared, such as a mono or colour planetary camera, and want sharper results when seeing is unsteady or when imaging in twilight.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e670 nm cut-on:\u003c\/strong\u003e 50% transmission at 670 nm and over 95% from 673–1100 nm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOD2 blocking from 400–660 nm\u003c\/strong\u003e to remove visible light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSCHOTT B260 substrate:\u003c\/strong\u003e 1.1 mm thick, 60\/40 surface quality, 1\/4 λ surface parallelism and 30″ parallelism.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIon-assisted multi-coating\u003c\/strong\u003e for scratch resistance and stable wavelength performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC aluminium cell:\u003c\/strong\u003e sand-blasted, black anodised and laser engraved, single-threaded M28.5×0.6.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSupplied in a protective filter box.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9142a-2_20250926085011_9535.jpg?v=1791670358\" alt=\"SVBONY SV183 1.25 inch 685nm IR pass filter cell and threads\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLunar imaging\u003c\/strong\u003e in near-IR, where seeing effects are reduced.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanetary imaging\u003c\/strong\u003e of Mars, Jupiter, Saturn and Venus for contrast and steadiness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwilight imaging:\u003c\/strong\u003e the filter darkens a bright dawn or dusk sky so the Moon and planets can be captured before full dark.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNear-IR nature photography\u003c\/strong\u003e with a camera sensitive above 670 nm, such as a modified DSLR or webcam.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9142a-3_20250926085014_1553.jpg?v=1791670357\" alt=\"SVBONY SV183 IR pass filter for lunar and planetary imaging\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread:\u003c\/strong\u003e M28.5×0.6 standard 1.25″ filter thread, for eyepiece barrels, camera nosepieces, filter wheels and drawers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 26 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera:\u003c\/strong\u003e needs a camera with near-IR sensitivity above 670 nm; colour cameras record the result as a monochrome-like image.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ version:\u003c\/strong\u003e SVBONY also makes the SV183 in a 2″ M48×0.75 cell (44 mm clear aperture); contact us if you need that size.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9142a-4_20250926085016_2410.jpg?v=1791670357\" alt=\"SVBONY SV183 IR pass filter in protective box\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImaging only:\u003c\/strong\u003e the eye has very little sensitivity above 670 nm, so SVBONY states it does not work for visual observing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCamera sensitivity matters:\u003c\/strong\u003e results depend on how much near-IR response your sensor has.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNet weight 8 g.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It threads into the 1.25″ nosepiece of your camera or into a filter wheel like any 1.25″ filter; refocus after fitting it, since IR focus differs slightly from visible.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I look through it with an eyepiece?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It blocks the visible spectrum and is designed for cameras only.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy image in infrared?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eAtmospheric turbulence affects longer wavelengths less, which steadies lunar and planetary detail and improves contrast.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it work with a colour camera?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYes, provided the sensor responds above 670 nm.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 1.25″ IR pass filter with a 670 nm cut-on, OD2 visible blocking and over 95% transmission to 1100 nm, for steadier, higher-contrast lunar and planetary images with an IR-sensitive camera.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722277847151,"sku":"W9142A","price":26.15,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9142a-0_20251231144340_5963.webp?v=1791670356"}],"url":"https:\/\/ontariotelescope.com\/collections\/visual-planetary-filters-svbony.oembed","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}