{"product_id":"pegasus-astro-photographic-filter-oiii-2-mounted-filter-peg-fltr-2m-o3","title":"Pegasus Astro Photographic Filter - OIII 2'' Mounted Filter (PEG-FLTR-2M-O3)","description":"\u003ch3\u003ePegasus Astro Photographic Filter - OIII 2'' Mounted Filter\u003c\/h3\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Oxygen III (OIII) CCD 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 500nm which corresponds to OIII emission lines. This reduces the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, high and low pressure sodium vapor lights, and the natural light caused by neutral oxygen emission in our atmosphere (i.e., skyglow). OIII narrowband filters allow only a small portion of light to pass through the filter, resulting in diffuse and planetary nebulae to appear more clearly against a blacker background of space.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg src=\"https:\/\/www.deepspaceproducts.com\/uimages\/pegasus\/Filter_narrowband_graph.png?width=700\" alt=\"\" width=\"542\" height=\"314\"\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTechnical Specification\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ctable dir=\"ltr\" cellspacing=\"0\" cellpadding=\"0\" border=\"1\"\u003e\n\u003ccolgroup\u003e \u003ccol width=\"194\"\u003e \u003ccol width=\"199\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Specifications\"}' rowspan=\"1\" colspan=\"2\"\u003eSpecifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Filter Size:\"}'\u003eFilter Size:\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"2 inch\"}'\u003e2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Polish: \"}'\u003ePolish:\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"1\/4 wavefront, Parfocal\"}'\u003e1\/4 wavefront, Parfocal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Transmission Range:\"}'\u003eTransmission Range:\u003c\/td\u003e\n\u003ctd style=\"box-sizing: border-box; border-bottom: 1px solid #ececec; font-size: 0.9em; line-height: 1.3; padding: 0.5em 0px 0.5em 0.5em; text-align: left; color: #666666;\" data-sheets-value='{\"1\":2,\"2\":\"T \u0026gt; 80% 500 nm, 7nm FWHM\"}'\u003eT \u0026gt; 80% 500 nm, 7nm FWHM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Coatings: \"}'\u003eCoatings:\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Multilayer Anti-reflection\"}'\u003eMultilayer Anti-reflection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Type:\"}'\u003eType:\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Narrowband (7nm)\"}'\u003eNarrowband (7nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Shape: \"}'\u003eShape:\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Round\"}'\u003eRound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Thickness:\"}'\u003eThickness:\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"5mm (filter) + 2.5mm (thread)\"}'\u003e5mm (filter) + 2.5mm (thread)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"Thread: \"}'\u003eThread:\u003c\/td\u003e\n\u003ctd data-sheets-value='{\"1\":2,\"2\":\"M48, 0.75 pitch\"}'\u003eM48, 0.75 pitch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan mce-data-marked=\"1\"\u003eFilter\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003ePegasus 1-Year Warranty\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Pegasus","offers":[{"title":"Default Title","offer_id":51750857408745,"sku":"buz1787937115636","price":161.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0766\/6964\/9129\/files\/pegasus-astro-photographic-filter---oiii-2-mounted-filter-peg-fltr-2m-o3_1.webp?v=1787937120","url":"https:\/\/www.sandalcove.shop\/products\/pegasus-astro-photographic-filter-oiii-2-mounted-filter-peg-fltr-2m-o3","provider":"My Store","version":"1.0","type":"link"}