{"product_id":"optolong-l-extreme-l-synergy-l2-dual-combo-filter-set-2","title":"Optolong L-Extreme + L-Synergy L2 Dual-Combo Filter Set - 2\"","description":"\u003c!-- more --\u003e\n\u003cdiv\u003e\n  \u003ch2\u003eL2 Dual-Combo Filter Set (L-eXtreme + L-Synergy)\u003c\/h2\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eL2 Dual-Combo Set\u003c\/strong\u003e includes two premium dual-narrowband filters engineered to unlock advanced narrowband and Hubble Palette imaging with \u003cstrong\u003ecolor cameras\u003c\/strong\u003e. This set combines the L-eXtreme and L-Synergy filters to deliver high transmission, strong light-pollution rejection, and exceptional flexibility—without the cost or complexity of a full monochrome SHO system.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch3\u003eL-eXtreme — OIII \u0026amp; Hα Dual-Narrowband Filter\u003c\/h3\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eL-eXtreme\u003c\/strong\u003e is a dual-narrowband filter designed to exclusively transmit the key nebular emission lines of\n    \u003cstrong\u003eOIII (500.7nm)\u003c\/strong\u003e and \u003cstrong\u003eHα (656.3nm)\u003c\/strong\u003e, each with a 7nm bandwidth.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    By effectively blocking all other wavelengths and light-pollution emission lines, the L-eXtreme ensures that only pure OIII and Hα signals are recorded during imaging, achieving maximum effective transmission and high contrast.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Years of optical and coating refinement have significantly optimized bright-star halo suppression, resulting in cleaner data and improved performance under light-polluted skies.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch3\u003eL-Synergy — OIII \u0026amp; SII Dual-Narrowband Filter\u003c\/h3\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eL-Synergy\u003c\/strong\u003e is a dual-narrowband filter engineered to deliver high transmission for the\n    \u003cstrong\u003eOIII (500.7nm)\u003c\/strong\u003e and \u003cstrong\u003eSII (672.4nm)\u003c\/strong\u003e spectral lines, each with a 7nm bandwidth.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    With exceptional out-of-band rejection, the L-Synergy effectively blocks all other wavelengths and light-pollution emission lines, ensuring that only true OIII and SII signals reach the camera sensor.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    Advanced coating technology minimizes bright-star halos, producing refined, high-contrast results ideal for deep-sky astrophotography.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch3\u003eDesigned for Hubble Palette Imaging with Color Cameras\u003c\/h3\u003e\n  \u003cp\u003e\n    The \u003cstrong\u003eL2 Dual-Combo Set\u003c\/strong\u003e is specifically engineered to enable Hubble Palette (SHO) imaging for color camera users,\n    supporting telescope systems as fast as \u003cstrong\u003ef\/3.3 and slower\u003c\/strong\u003e.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    This two-filter solution combines OIII \u0026amp; Hα (L-eXtreme) with OIII \u0026amp; SII (L-Synergy), breaking the traditional limitations of narrowband imaging with color cameras.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv\u003e\n  \u003ch3\u003eAdvanced Narrowband Imaging Without Added Complexity\u003c\/h3\u003e\n  \u003cp\u003e\n    By eliminating the need for a monochrome camera or an expensive three-filter SHO setup, the L2 Dual-Combo Set allows astrophotographers to achieve Hubble-style color mapping at a fraction of the cost and workflow complexity.\n  \u003c\/p\u003e\n  \u003cp\u003e\n    This streamlined filter combination preserves the advantages of color cameras while expanding creative possibilities in deep-sky astrophotography, from detailed nebular structures to expressive scientific color renditions.\n  \u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Optolong","offers":[{"title":"Default Title","offer_id":50923140808989,"sku":"OPT-L2-COMBO","price":569.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Optolong-L2Dual-Combo-Filter-Set.jpg?v=1770476463","url":"https:\/\/davidastro.com\/fr-us\/products\/optolong-l-extreme-l-synergy-l2-dual-combo-filter-set-2","provider":"David Astro","version":"1.0","type":"link"}