{"product_id":"svbony-sv220-2-3nm-narrowband-filter-h-alpha-oiii-for-astrophotography-copy","title":"SVBONY SV220  2\" 7nm Narrowband Filter – H-Alpha \u0026 OIII for Astrophotography","description":"\u003cp\u003e\u003cstrong\u003eUltra-Narrow 7nm Dual-Band Filter – Ideal for Emission and Planetary Nebulae\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe SVBONY SV220 2\" 7nm Narrowband Filter is designed for \u003cstrong\u003ehigh-contrast deep-sky astrophotography\u003c\/strong\u003e, targeting \u003cstrong\u003eH-Alpha (656.3nm) and OIII (500.7nm) emission lines\u003c\/strong\u003e with an \u003cstrong\u003eultra-narrow bandwidth of just 7nm\u003c\/strong\u003e. It effectively blocks unwanted wavelengths, such as light pollution and stray light, ensuring \u003cstrong\u003ecrisp, clean views of nebulae and galaxies\u003c\/strong\u003e even in urban environments.\u003c\/p\u003e\n\u003cp\u003eDesigned for \u003cstrong\u003efull-frame sensors\u003c\/strong\u003e, this filter reduces vignetting in ultra-wide-angle lenses and ensures \u003cstrong\u003euniform brightness from edge to edge\u003c\/strong\u003e, allowing you to capture the full beauty of deep-sky objects.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow 7nm Bandwidth\u003c\/strong\u003e: Perfect for capturing \u003cstrong\u003eemission and planetary nebulae\u003c\/strong\u003e with exceptional detail and contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-Frame Compatibility\u003c\/strong\u003e: Optimized for \u003cstrong\u003efull-frame telescopes and cameras\u003c\/strong\u003e, minimizing vignetting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard M48×0.75 Thread\u003c\/strong\u003e: Fits most \u003cstrong\u003e2\" astrophotography setups\u003c\/strong\u003e with a barrel size of \u003cstrong\u003eΦ50.8 × 7 mm\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Transmission Rate\u003c\/strong\u003e: \u003cstrong\u003e≥85% average transmission\u003c\/strong\u003e for H-Alpha and OIII, ensuring bright and detailed images.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlocking Range\u003c\/strong\u003e: \u003cstrong\u003e300–1050nm\u003c\/strong\u003e with \u003cstrong\u003eOD5 blocking depth\u003c\/strong\u003e, effectively suppressing unwanted light.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"relative left-1\/2 -translate-x-1\/2\"\u003e\n\u003cdiv class=\"w-full pt-3\"\u003e\n\u003cdiv class=\"rounded-card-md border-default bg-card min-w-full overflow-hidden border\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Size\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Dimensions\u003c\/td\u003e\n\u003ctd\u003eΦ50.8 × 7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Type\u003c\/td\u003e\n\u003ctd\u003eSingle Thread \/ External Thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Specification\u003c\/td\u003e\n\u003ctd\u003eM48 × 0.75 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003e6061T Aluminum Extrusion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSubstrate Thickness\u003c\/td\u003e\n\u003ctd\u003e2.0 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\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCentral Wavelengths\u003c\/td\u003e\n\u003ctd\u003e500.7 nm (OIII) \/ 656.3 nm (H-Alpha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Transmission\u003c\/td\u003e\n\u003ctd\u003e≥85% (OIII \u0026amp; H-Alpha average)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth (FWHM)\u003c\/td\u003e\n\u003ctd\u003e7 ± 1 nm (for both OIII and H-Alpha)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Wavelength Range\u003c\/td\u003e\n\u003ctd\u003e300–1050 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBlocking Depth\u003c\/td\u003e\n\u003ctd\u003eAverage OD5\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\u003eTransmitted Wavefront PV ≤ λ\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallelism\u003c\/td\u003e\n\u003ctd\u003e30 arcseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet Weight\u003c\/td\u003e\n\u003ctd\u003e12.5 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat’s in the Box?\u003c\/strong\u003e\u003cbr\u003e1x SVBONY SV220 2\" 7nm H-Alpha \u0026amp; OIII Narrowband Filter\u003cbr\u003e1x Protective Case\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2\" Filter Holders\u003c\/strong\u003e (M48×0.75 thread)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFull-frame and APS-C cameras\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMost astronomical telescopes and imaging setups\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for deep-sky objects\u003c\/strong\u003e such as the Orion Nebula, Eagle Nebula, and Horsehead Nebula\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePerfect For\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAstrophotographers capturing \u003cstrong\u003eemission and planetary nebulae\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUsers in \u003cstrong\u003elight-polluted areas\u003c\/strong\u003e seeking high-contrast images\u003c\/li\u003e\n\u003cli\u003eSetups requiring \u003cstrong\u003efull-frame compatibility\u003c\/strong\u003e and minimal vignetting\u003c\/li\u003e\n\u003cli\u003eThose needing \u003cstrong\u003ehigh transmission and blocking depth\u003c\/strong\u003e for detailed deep-sky imaging\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"SVBONY UK","offers":[{"title":"Default Title","offer_id":58905089605964,"sku":"[W9172B]","price":159.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/4506\/6060\/files\/6380801003005541093351142.jpg?v=1790002997","url":"https:\/\/svbonyuk.com\/products\/svbony-sv220-2-3nm-narrowband-filter-h-alpha-oiii-for-astrophotography-copy","provider":"SVBONY UK ","version":"1.0","type":"link"}