{"product_id":"svbony-sv115-oiii-filter-narrowband-cuts-light-pollution-1-25-inch-18nm-f9186a","title":"SVBONY SV115 1.25 inch OIII Filter Narrowband 18nm, Cuts Light Pollution (F9186A)","description":"\u003cdiv\u003e\n\u003ch2 class=\"product-single__title\"\u003eSVBONY SV115 1.25 inch OIII Filter Narrowband 18nm, Cuts Light Pollution \u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cul data-mce-fragment=\"1\" class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" class=\"a-list-item\"\u003eThe 1.25\" O-III filter useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming. Allowing just for the Double Ionized Oxygen lines between 495.9nm to 500.7nm to pass through at 90%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" class=\"a-list-item\"\u003eAstrophotographic;The filter enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; 1.25\" filter allows high-contrast imaging even in areas with strong light pollution\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" class=\"a-list-item\"\u003eThe filter made from high-grade glass with dichroic interference and antireflection coatings;not only useful at light-polluted sites; the contrast is also increased at dark sky sites;it can be used with all 1.25\" eyepieces\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" class=\"a-list-item\"\u003eThe O-III filter completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized;increases contrast through selective filtration-Anti-reflection coated to prevent glaring and ghosting\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" class=\"a-list-item\"\u003eNarrowband filter do not eliminate the effects of light pollution or increase the object’s brightness;in many cases, they increase the contrast between nebula and night sky, not brightening the nebula\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\" class=\"a-list-item\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\" class=\"a-list-item\"\u003e\u003cimg height=\"221\" width=\"550\" style=\"display: block; margin-left: auto; margin-right: auto;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/6372999962820620812992847_480x480.jpg?v=1686234045\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"tabs-listing\"\u003e\n\u003cdiv class=\"tab-container\"\u003e\n\u003cdiv id=\"tab4\" class=\"tab-content\"\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSvbony narrowband OIII filter suitable for visual  observation on most emission nebulae, planetary nebulae and supermova surfaces\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for viewing on bright nebulae like M42 Orion Nebula in heavy light pollution\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUse with a large aperture telescope under clear and dark viewing conditions with good seeing\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003eF9186A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eSize\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e1.25'' 18nm O-III\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eBlocking area\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e400-700nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eTransmittance\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e90% at 495.9nm and 500.7nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eFWHM\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e18±2nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eThickness\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e1.85mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"text-align: center;\"\u003eDiameter\u003c\/td\u003e\n\u003ctd style=\"text-align: center;\"\u003e1.25 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp class=\"product-single__title\"\u003eSVBONY SV115 OIII Filter Narrowband 1.25 inch 18nm\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eManuals \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/svbony-warranty\" data-mce-href=\"https:\/\/istronomyplus.com\/pages\/svbony-warranty\" target=\"_blank\"\u003eSvbony 1-Year Warranty \u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Svbony","offers":[{"title":"Default Title","offer_id":44098681340133,"sku":"SVB-F9186A","price":64.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/svbony-sv115-1-25-inch-oiii-filter-narrowband-18nm-cuts-light-pollution-f9186a-astronomy-plus-1.jpg?v=1690490671","url":"https:\/\/istronomyplus.com\/products\/svbony-sv115-oiii-filter-narrowband-cuts-light-pollution-1-25-inch-18nm-f9186a","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}