{"product_id":"optolong-l-quad-enhance-filter-2-mounted","title":"Optolong L-Quad Enhance Filter - 2\" Mounted","description":"\u003cp\u003e\u003cstrong\u003eSummary\u003c\/strong\u003e\u003cbr\u003eThe L-Quad Enhance Filter is a quad bandpass light pollution filter designed for use with color cameras.  It suppresses light pollution generated by man-made light sources.  As a result, celestial images are more distinct and have higher contrast.  The filter provides better color balance will reducing the effect of light pollution.  The filter is designed to provide stellar results on any target - from galaxies to nebulae and star clusters.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003cbr\u003e- Improves signal-to-noise ratio (SNR)\u003cbr\u003e- Near IR cut-off to 1000nm.  This reduces the effects of IR noise\u003cbr\u003e- 90% transmittance of nebula emission lines at H-Beta, OIII, H-Alpha, and SII\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpectrum and Filter Characteristics\u003cbr\u003e\u003c\/strong\u003eThickness: 1.85mm\u003cbr\u003eBlocking Range: 300 - 1000nm\u003cbr\u003eBlocking Depth: OD2 - OD4\u003cbr\u003eSurface Quality: 60 \/ 40\u003cbr\u003eTransmitted Wavefront RMS: \u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eλ\/4\u003cbr\u003eParallelism: 30s\u003cbr\u003e\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003eBandpass \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/optolong.com\/uploads\/images\/20231010\/dbeae9d38c40e5c4742bd4ce3bc3eddf.jpg\" data-mce-fragment=\"1\" data-mce-src=\"https:\/\/optolong.com\/uploads\/images\/20231010\/dbeae9d38c40e5c4742bd4ce3bc3eddf.jpg?width=700\"\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":52183596859621,"sku":"qpj1787928723354","price":166.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/4561\/8405\/files\/optolong-l-quad-enhance-filter---2-mounted_1.jpg?v=1787928727","url":"https:\/\/perovia.shop\/products\/optolong-l-quad-enhance-filter-2-mounted","provider":"My Store","version":"1.0","type":"link"}