{"product_id":"chroma-3nm-oiii-filter-optimized-for-f-2-8-f-3-6-27066","title":"Chroma 3nm OIII Filter Optimized for f\/2.8-f\/3.6 (27066)","description":"\u003ch2\u003eChroma 3nm OIII Filter Optimized for f\/2.8-f\/3.6\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp data-mce-fragment=\"1\"\u003eChroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when imaging nebulae. Chroma’s f\/3.0 filters are designed to minimize spectral shift and hold their shape better in an f\/3.0 beam.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eIn the Box\u003c\/h3\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan\u003eChroma 3nm OIII Filter of the chosen size\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eChroma Lifetime Warranty\u003cbr\u003e\u003c\/p\u003e","brand":"Chroma","offers":[{"title":"1.25\" Threaded Filter","offer_id":43974607700197,"sku":"CHR-27066-125","price":805.0,"currency_code":"CAD","in_stock":true},{"title":"2\" Threaded Filter","offer_id":43974607732965,"sku":"CHR-27066-2","price":1820.0,"currency_code":"CAD","in_stock":true},{"title":"31mm Unmounted","offer_id":43974607765733,"sku":"CHR-27066-31","price":805.0,"currency_code":"CAD","in_stock":true},{"title":"36mm Unmounted","offer_id":43974607798501,"sku":"CHR-27066-36","price":1085.0,"currency_code":"CAD","in_stock":true},{"title":"50mm Unmounted","offer_id":43974607831269,"sku":"CHR-27066-50","price":1750.0,"currency_code":"CAD","in_stock":true},{"title":"50x50mm Square Unmounted","offer_id":43974607864037,"sku":"CHR-27066-50X50","price":2170.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/chroma-3nm-oiii-filter-optimized-for-f2-8-f3-6-27066-astronomy-plus.webp?v=1765049535","url":"https:\/\/istronomyplus.com\/products\/chroma-3nm-oiii-filter-optimized-for-f-2-8-f-3-6-27066","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}