{"product_id":"touptek-set-filtri-narrowband-sho-1-25-6-5nm-h-alpha-oiii-sii","title":"ToupTek SHO Narrowband Filter Set 1.25\" 6.5nm - H-alpha OIII SII","description":"\u003cp\u003e\u003cstrong\u003eToupTek SHO Filter Set 1.25\"\u003c\/strong\u003e — Set of three \u003cstrong\u003eprecision narrowband filters\u003c\/strong\u003e with \u003cstrong\u003e6.5 nm bandpass\u003c\/strong\u003e, designed for \u003cstrong\u003eastronomical imaging\u003c\/strong\u003e of emission nebulae with monochrome CCD and CMOS cameras.\u003c\/p\u003e\n\n\u003cp\u003eEach filter perfectly isolates its spectral line, blocking \u003cstrong\u003elight pollution\u003c\/strong\u003e and unwanted sky background radiation — effective even under heavily polluted skies and with \u003cstrong\u003efull Moon present\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eIncluded Filters:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eH-Alpha\u003c\/strong\u003e — 656.28 nm ± 0.3 nm\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e[O III]\u003c\/strong\u003e — 500.7 nm \u0026amp; 495.9 nm ± 0.3 nm\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e[S II]\u003c\/strong\u003e — 671.6 nm \u0026amp; 673.1 nm ± 0.3 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e6.5 nm bandpass\u003c\/strong\u003e constant across all filters — optimizes the \u003cstrong\u003esignal-to-noise ratio\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSCHOTT optical glass\u003c\/strong\u003e (Germany) 2 mm, polished on both sides for optimal flatness\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eIAD multi-layer AR coating\u003c\/strong\u003e (Ion-Assisted Deposition) — transmission \u0026gt;90%, minimal halo, high durability\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSpectral precision ±0.3 nm\u003c\/strong\u003e — sharp and accurate cut of emission bands\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMatte black anodized aluminum cell\u003c\/strong\u003e — scratch and oxidation resistant\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eStandard M28.5×0.6 thread\u003c\/strong\u003e — compatible with electronic 1.25\" filter wheels\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eHubble Palette (SHO)\u003c\/strong\u003e — Hα = green, OIII = blue, SII = red\u003c\/li\u003e\n\u003cli\u003eDiffuse nebulae: Orion, Heart, Rosette\u003c\/li\u003e\n\u003cli\u003ePlanetary nebulae: M27 (Dumbbell), Helix (NGC 7293)\u003c\/li\u003e\n\u003cli\u003eSupernova remnants: Veil Nebula\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNarrowband imaging from urban and suburban sites\u003c\/strong\u003e with heavy light pollution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n\u003ctr style=\"background:#f2f2f2;\"\u003e\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eParameter\u003c\/th\u003e\u003cth style=\"text-align:left; padding:8px; border:1px solid #ddd;\"\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eIncluded filters\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eH-Alpha, [O III], [S II]\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eH-Alpha wavelength\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e656.28 nm ± 0.3 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003e[O III] wavelength\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e500.7 nm \u0026amp; 495.9 nm ± 0.3 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003e[S II] wavelength\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e671.6 nm \u0026amp; 673.1 nm ± 0.3 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eBandpass\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e6.5 nm (constant)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eSpectral tolerance\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e± 0.3 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eGlass\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eSCHOTT (Germany), 2 mm, polished both sides\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCoating\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eIAD multi-layer AR — transmission \u0026gt;90%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eCell\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eMatte black anodized aluminum\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#f9f9f9;\"\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eThread\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003eM28.5×0.6 (standard 1.25\")\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e\u003cstrong\u003eFormat\u003c\/strong\u003e\u003c\/td\u003e\u003ctd style=\"padding:8px; border:1px solid #ddd;\"\u003e1.25\" (31.75 mm)\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"ToupTek Astro","offers":[{"title":"Default","offer_id":57280877330763,"sku":"TPTP-SHO-125","price":329.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/touptek-filtri-narrowband-sho-1-25-6-5nm-set-3-filtri-astronomia.jpg?v=1778854608","url":"https:\/\/adriasky.it\/en\/products\/touptek-sho-narrowband-filter-set-125-65nm","provider":"Adriasky","version":"1.0","type":"link"}