{"product_id":"svbony-sv260-2-multi-bandpass-light-pollution-filter","title":"SVBONY SV260 2″ Multi-Bandpass Light Pollution Filter","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386961075189920996204892.webp?v=1791667879\" alt=\"SVBONY SV260 5-bandpass broadband light pollution 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 SV260 is a 2″ multi-bandpass broadband light-pollution filter. Instead of two narrow emission lines, it passes several wider windows across the visible spectrum and blocks the specific wavelengths emitted by mercury and sodium street lighting, as well as ultraviolet below 400 nm and infrared from 720 to 1100 nm at OD4. SVBONY rates peak transmittance at 90%. The filter has a 2 mm substrate, 44 mm clear aperture, 60\/40 surface quality and 1\/2λ parallelism, in an M48 x 0.75 cell, and weighs 12.5 g.\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 from a suburban or town site and want to cut sky glow on broadband targets such as galaxies, reflection nebulae and star fields, where a narrowband filter would remove too much of the signal and star colour.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-bandpass design:\u003c\/strong\u003e transmits several emission and continuum windows while rejecting common artificial-light lines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTargeted blocking:\u003c\/strong\u003e mercury lines at 435.8, 546.1, 577 and 578.1 nm and the sodium line at 589.6 nm, with published optical densities from OD1 to OD3.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOD4 UV and IR cut:\u003c\/strong\u003e 350–400 nm and 720–1100 nm, which keeps stars tight and colour balanced on colour sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90% peak transmittance\u003c\/strong\u003e in the pass windows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2″ M48 x 0.75 cell\u003c\/strong\u003e with a 44 mm clear aperture.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386961087423671314038635.jpg?v=1791667879\" alt=\"SVBONY SV260 90% peak transmittance and OD4 cut-off depth\" 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\/6386961081044881729871624.jpg?v=1791667879\" alt=\"SVBONY SV260 comparison without light pollution filter\" 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\/6386961082412951115249410.jpg?v=1791667879\" alt=\"SVBONY SV260 300-1000nm working range with UV and IR cut\" 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\u003eGalaxies and star clusters\u003c\/strong\u003e from light-polluted skies.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWide star fields and Milky Way regions.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmission nebulae\u003c\/strong\u003e in broadband colour, where a dual-band filter would be too selective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColour cameras and DSLRs\u003c\/strong\u003e where a UV\/IR cut is also needed.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386961078382411564073354.webp?v=1791667879\" alt=\"SVBONY SV260 star field imaging in a Bortle 6 light pollution area\" 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\/6386961084951087152114363.jpg?v=1791667879\" alt=\"SVBONY SV260 star field imaging under light pollution\" 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\/6386961091757278756000869.jpg?v=1791667879\" alt=\"SVBONY SV260 broadband deep-sky imaging from a light-polluted site\" 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 M48 x 0.75 standard 2″ filter thread, for filter drawers, filter wheels and 2″ nosepieces with filter threads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCameras:\u003c\/strong\u003e one-shot-colour astronomy cameras and DSLRs; it also includes the UV\/IR blocking these sensors need.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter drawers:\u003c\/strong\u003e SVBONY SV226 filter drawers take 2″ M48 filters, which makes it easy to swap between the SV260 and a narrowband filter during a session.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6386961091786982476064865.jpg?v=1791667879\" alt=\"SVBONY SV260 light pollution filter imaging comparison\" 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\/6386961091817012811505061.jpg?v=1791667879\" alt=\"SVBONY SV260 light pollution filter star field result\" 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\/6386961091847895957183090.jpg?v=1791667879\" alt=\"SVBONY SV260 filter use with colour cameras in light-polluted skies\" 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 filter:\u003c\/strong\u003e SVBONY designs it for deep-sky and star-field photography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroadband, not narrowband:\u003c\/strong\u003e it reduces sky glow rather than eliminating it. For emission nebulae under very bright skies, a dual-band filter such as the SVBONY SV220 isolates the emission lines more strongly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED lighting:\u003c\/strong\u003e the published blocking lines are mercury and sodium; broad-spectrum white LED light falls partly inside the pass windows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocal ratio:\u003c\/strong\u003e SVBONY does not publish a focal-ratio rating for this filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlocking data:\u003c\/strong\u003e two entries of SVBONY's published blocking list could not be read from the vendor page and are omitted from the specification table.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/6387244826710371677730187.jpg?v=1791667879\" alt=\"SVBONY SV260 broadband filter star field comparison in light pollution\" 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. It threads into any M48 x 0.75 filter thread or 2″ filter drawer, and focus is set with the filter in place as usual.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is it different from a dual-band filter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe SV260 passes several broad windows and keeps natural star colour, which suits galaxies and star fields. A dual-band filter passes only H-alpha and OIII and suits emission nebulae.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I still need a UV\/IR cut filter?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo. The SV260 blocks 350–400 nm and 720–1100 nm at OD4 itself.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a 2″ M48 multi-bandpass filter that blocks mercury and sodium light pollution plus UV and IR, for broadband deep-sky and star-field imaging from town and suburban sites.\u003c\/p\u003e","brand":"SvBony","offers":[{"title":"Default Title","offer_id":67721434234991,"sku":"W9194A","price":178.11,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/w9194a-1_20251127144515_4927.webp?v=1791665350","url":"https:\/\/ontariotelescope.com\/products\/svbony-sv260-2-multi-bandpass-light-pollution-filter","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}