{"product_id":"optolong-set-filtri-l2-dual-combo-2-l-synergy-l-extreme","title":"Optolong L2 Dual-Combo 2\" Set (L-Synergy + L-eXtreme)","description":"\u003cdiv class=\"product-description\"\u003e\n\u003ch1\u003eOptolong L2 Dual-Combo 2\" Filter Set (L-Synergy + L-eXtreme)\u003c\/h1\u003e\n\u003cp\u003eThe \u003cstrong\u003eOptolong L2 Dual-Combo 2\"\u003c\/strong\u003e Filter Set is designed for astrophotographers using \u003cem\u003ecolor cameras\u003c\/em\u003e who want to achieve \u003cstrong\u003eHubble Palette (SHO)\u003c\/strong\u003e-style results without switching to a monochrome camera. The kit includes two high-performance filters:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eL-eXtreme (Ha 7nm + OIII 7nm)\u003c\/strong\u003e – selectively isolates the emission lines of Hydrogen-Alpha (656.3nm) and Oxygen III (500.7nm), effectively blocking light pollution.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eL-Synergy (SII 7nm + OIII 7nm)\u003c\/strong\u003e – captures Sulfur II (672.4nm) and Oxygen III (500.7nm) with precision, delivering clean, natural-looking images.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis innovative combination offers a simplified and affordable alternative to traditional narrowband imaging, enabling deep, detailed astrophotography even with fast optical systems down to \u003cstrong\u003ef\/3.3\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eMain Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePerfect for \u003cstrong\u003eHubble Palette imaging\u003c\/strong\u003e with color cameras.\u003c\/li\u003e\n\u003cli\u003eIdeal for \u003cstrong\u003edeep-sky astrophotography\u003c\/strong\u003e: emission nebulae, supernova remnants, and faint targets.\u003c\/li\u003e\n\u003cli\u003eOptimized to suppress \u003cstrong\u003estar halos\u003c\/strong\u003e and gradients, even under full moon conditions.\u003c\/li\u003e\n\u003cli\u003eProvides maximum creative flexibility with less complexity and lower cost.\u003c\/li\u003e\n\u003cli\u003eProfessional-grade performance: \u0026gt;85% transmission, 1.85mm optical glass, 60\/40 surface quality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Filters\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eL-eXtreme (Ha-OIII), L-Synergy (SII-OIII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBandwidth (FWHM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e7nm (Ha, OIII, SII)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUnwanted light blocking\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300–1050nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransmission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;85%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.85 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubstrate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolished optical glass (λ\/4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurface Quality\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60\/40 – Parallelism: 30''\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eField Performance\u003c\/h2\u003e\n\u003cp\u003eExtensive tests confirm excellent performance even under full moon conditions. With integrations exceeding 20 hours, the L2 Dual-Combo delivers sharp images free from gradients or halos, with clearly separated SII and OIII channels. An ideal choice for astrophotographers who want to \u003cstrong\u003emaximize the potential of their color camera\u003c\/strong\u003e while reducing workflow complexity and post-processing time.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":53471530156363,"sku":"OPL2-Dual-Combo","price":549.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/set-filtri-ottici-optolong-l2-dual-combo-astrofotografia.png?v=1759398869","url":"https:\/\/adriasky.it\/en\/products\/optolong-l2-dual-combo-2-inch-set","provider":"Adriasky","version":"1.0","type":"link"}