{"product_id":"svbony-sv115-2-inch-oiii-light-damage-filter-18nm-f9186b","title":"SVBONY SV115 2-inch OIII Light Damage Filter [18nm] F9186B","description":"\u003cdiv id=\"offer-template-0\"\u003e\u003c\/div\u003e\n\u003cp\u003eNarrowband OIII filters are designed specifically for nebula observation, allowing light with a bandwidth of 18nm centered at a wavelength of 500nm to pass through, corresponding to OIII emission lines, and reducing the transmission of certain wavelengths of light, particularly light generated by artificial light including mercury vapor, highpressure and lowpressure sodium vapor lamps, and harmful natural light caused by the release of neutral oxygen from the atmosphere (such as sky glow).\u003cbr\u003eFeatures:\u003cbr\u003eBoth surfaces of the filter have undergone fine optical polishing with 1\/4 wave and 30 parallelism.\u003cbr\u003e2. Suitable for visual observation of most emission nebulae, planetary nebulae, and supernova remnants.\u003cbr\u003e3. Suitable for viewing on bright nebulae such as M42 Orion Nebula with strong light pollution.\u003cbr\u003e4. Used together with large aperture telescopes, it has a good field of view in both clear and dark observation conditions.\u003cbr\u003eNarrowband filters cannot eliminate the effects of light pollution or increase the brightness of objects. In many cases, they increase the contrast between the nebula and the night sky without brightening the nebula.\u003cbr\u003e6. The clear aperture of the thin metal battery is 45 millimeters and can accommodate a 2inch filter\u003cbr\u003e7. Each filter is equipped with a plastic casing lined with highpressure EVA casing\u003cbr\u003eSpecifications:\u003cbr\u003e1. Blocking area: 400-700nm\u003cbr\u003e2. Transmittance: 90% at 495.9nm and 500.7nm\u003cbr\u003e3. Half width: 18 ± 2nm\u003cbr\u003e4. Thickness: 1.85mm\u003cbr\u003e5. Surface quality: 60\/40 (refer to MIL-O-13830)\u003cbr\u003e6. Diameter: 2 inches\u003cbr\u003e7. Weight: 31 grams\u003cbr\u003eWarning:\u003cbr\u003eThe filter is not suitable for solar observation. Do not use this filter to see the sun. If you do not follow the warning, you will be blind.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/img\/ibank\/O1CN01i9XM4G1r696pUHMlV_!!2530665581-0-cib.jpg\" alt=\"hW6VgvKkztTTScGJPNxpygYeaPz6rmekUyE9\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/img\/ibank\/O1CN01yCDYQu1r696mGU2ZK_!!2530665581-0-cib.jpg\" alt=\"F9186B- (5)\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/img\/ibank\/O1CN01KQT9dg1r696ohlKuV_!!2530665581-0-cib.jpg\" alt=\"F9186B- (6)\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/img\/ibank\/O1CN01BxodIS1r696kJWj77_!!2530665581-0-cib.jpg\" alt=\"F9186B- (9)\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cbu01.alicdn.com\/img\/ibank\/O1CN01EysOpM1r696m8qXy2_!!2530665581-0-cib.jpg\" alt=\"F9186B- (2)\"\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"mickcara","offers":[{"title":"1111","offer_id":42976135413897,"sku":"7a2ce5","price":266.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0365\/2131\/2393\/files\/f332c3808e7d8de7b606835ee62d9bc7.jpg?v=1726215895","url":"https:\/\/mickcara.com\/products\/svbony-sv115-2-inch-oiii-light-damage-filter-18nm-f9186b","provider":"mickcara","version":"1.0","type":"link"}