{"product_id":"svbony-sv229-140mm-solar-filter","title":"SVBONY SV229 140mm White-Light Solar Filter with Metal Cap (fits 118–159mm OD)","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6383564104258199945021770.jpg?v=1791670055\" alt=\"SVBONY SV229 140mm solar 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 SV229 (W9183C) is a full-aperture white-light solar filter that fits over the front of a telescope. A polymer film in an aluminium frame cap gives a 140 mm aperture, and three metal clamping screws adjust the fit to tubes with an outer diameter of 118–159 mm. SVBONY states the filter conforms to ISO 12312-2:2015 and is certified by the American Astronomical Society; it rejects harmful ultraviolet and infrared radiation and shows the Sun in a natural orange colour.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you want to observe or photograph sunspots, granulation and solar eclipses in white light through a refractor or Maksutov in the 118–159 mm outer-diameter range.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO 12312-2:2015:\u003c\/strong\u003e SVBONY states conformance and AAS certification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e140 mm aperture, 118–159 mm fit:\u003c\/strong\u003e an adjustable cap for a wide range of tube diameters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminium frame:\u003c\/strong\u003e more stable and durable than a plastic cell.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree metal clamping screws:\u003c\/strong\u003e with protective plastic caps to grip the tube without marking it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural orange solar image:\u003c\/strong\u003e UV and IR are rejected.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386098253408169282981440.jpg?v=1791670055\" alt=\"SVBONY SV229 140mm solar filter fits 118-159 mm outer diameter\" 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\/6383564143559085747781989.jpg?v=1791670055\" alt=\"SVBONY SV229 140mm solar filter aluminium frame\" 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\/6386098251432931864893220.jpg?v=1791670055\" alt=\"SVBONY SV229 140mm solar filter clamping screws snug fit\" 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\/6384418895770053881769628.webp?v=1791670055\" alt=\"SVBONY SV229 solar filter ISO 12312-2 certification panel\" 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\u003eSunspot and granulation observing\u003c\/strong\u003e in white light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePartial phases of solar eclipses\u003c\/strong\u003e and transits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhite-light solar imaging\u003c\/strong\u003e with a camera at the focuser.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6383564143436267692910970.jpg?v=1791670055\" alt=\"SVBONY SV229 140mm solar filter for white-light solar observation\" 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\u003eFit range:\u003c\/strong\u003e telescope outer diameter 118–159 mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed by SVBONY for:\u003c\/strong\u003e SV48P 102, MK105, SV503 102 mm f\/7 and SV550 122 mm f\/7, and telescopes from other brands in the same diameter range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmaller tubes:\u003c\/strong\u003e the 103 mm SV229 (W9183B) covers 80–118 mm outer diameters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6383564143498447277937364.jpg?v=1791670055\" alt=\"SVBONY SV229 140mm solar filter on SV550 telescope\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\u003cp\u003eMeasure the outside of your dew shield or tube front, or send us your telescope model, and we will confirm which SV229 fits.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWhat's in the Box\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSVBONY SV229 solar filter with metal cap\u003c\/li\u003e\n\u003cli\u003e3 metal clamping screws with protective plastic caps\u003c\/li\u003e\n\u003cli\u003e3 metal screw caps\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\u003eInspect before every use:\u003c\/strong\u003e SVBONY's guidance is to check the film each time and retire a filter that is damaged, torn, punctured or separated from its frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure fit:\u003c\/strong\u003e the clamping screws hold the cap on the tube; SVBONY suggests tape as an extra measure if needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinder scopes:\u003c\/strong\u003e cover or remove the finder, or fit it with its own solar filter, before pointing at the Sun.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilm appearance:\u003c\/strong\u003e at this diameter, slight wavy lines in the film are normal and do not affect the view.\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\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386098249943424793569170.jpg?v=1791670055\" alt=\"SVBONY SV229 140mm solar filter how-to-use and inspection guide\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\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. Slip the cap over the front of the tube and tighten the three clamping screws evenly until it sits snugly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it fit my telescope?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt fits tubes with an outside diameter of 118–159 mm, measured where the cap will sit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use it for H-alpha?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. It is a white-light filter showing sunspots and granulation; prominences need a dedicated H-alpha system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it certified?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSVBONY states conformance to ISO 12312-2:2015 and AAS certification.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 140 mm white-light solar filter cap in an aluminium frame that fits 118–159 mm tubes, for safe sunspot, eclipse and solar imaging sessions.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67722332831855,"sku":"W9183C","price":37.25,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9183c-_20250806100050_7525_20260822135406_4712.webp?v=1791670568","url":"https:\/\/ontariotelescope.com\/products\/svbony-sv229-140mm-solar-filter","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}