{"title":"Optolong L-Synergy \u0026 L-Combo Dual Filters","description":"","products":[{"product_id":"optolong-l1-dual-combo-set-with-l-quad-l-para-2-filters-l1set-2","title":"Optolong L1 Dual Combo Set with L-Quad \u0026 L-Para 2\" Filters - L1SET-2","description":"\u003cp\u003e\u003cspan\u003eThe Optolong L1 Dual Combo Filter Set includes an L-QUAD \u003c\/span\u003eEnhance Broadband Filter and an L-Para Dual (OIII \u0026amp; Ha) 10nm Filter, both in 2\" threaded aluminum cells.  Together these two filters produce amazing results, with dampening of light pollution, increased contrast, color optimization and precise signal capture!\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Horsehead_L1_Dual_Filters.jpg?v=1754591365\"\u003e\u003cem\u003eHorsehead \u0026amp; Flame Nebula by Gianni Lacroce\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAbout the L-Quad Broadband Enhance Filter...\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-Quad filter provides better color balance while offering excellent light pollution resistance. It is suitable for a wide range of imaging targets, including continuous spectrum objects (RGB) such as nebulae, galaxies, and star clusters. This filter maximizes the preservation of RGB color balance in broadband spectrum targets like nebulae and galaxies, effectively improving contrast and detail to render subjects more vivid and three-dimensional. \u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAbout the L-Para Dual 10nm Narrowband Filter...\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eIn systems with a focal ratio of F2 and above, the transmittance of nebula emission lines OIII and Ha exceed 85%, with excellent contrast and Anti-Halo characteristics. This Optolong narrowband filter is suitable for all telescope systems and is adaptable to fast optics (focal ratios of F2, F2.8, F3.2, F4) as well as various standard\/normal focal ratio telescopes. Ideal for capturing Hα \u0026amp; OIII signals in celestial objects, this filter enhances image contrast and reveals richer details in Hα \u0026amp; OIII emissions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: left;\"\u003eBroadband - Narrowband Synergy\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eUsing the qualities of both of the filters that make up the L1 Combo Set produces a “Broadband + Narrowband” synergy that has been engineered for precision and colour fidelity that achieves precise signal capture and color optimization for astrophotography:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e1. The Quad bandpass broadband filter captures the RGB signals of celestial targets \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e2. The L-Para Dual narrowband 10nm filter selectively acquires Hα and OIII emission lines, revealing fine filamentary structures and the detailed morphology of ionized gas in deep-sky objects. After post-processing, photographers can effortlessly obtain fused images combining RGB with Hα \u0026amp; OIII data. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis \"Broadband-Narrowband Synergy\" solution delivers more vibrant color rendition while accentuating subtle signal details, unlocking innovative approaches for astrophotography and enhancing the creative possibilities of color camera imaging. It pioneers new artistic dimensions, transforming the deep-sky photography process into a more technically engaging and visually rewarding experience.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Optolong_L1_Dual_Filter_Comparison.jpg?v=1754591365\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003eCoating Technology\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMulti-layers anti-reflection coating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eNon-cementing optical substrate coating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eOptolong adopts precision coating based on Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003ePlanetary rotation system offers precision and homogeneity of coatings to ensure high value on transmission of pass-band as well as the optical density of off-band.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ccenter\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/lR-fE5CHr3g?si=Rwq7rrQp95kiUPQQ\u0026amp;start=20\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/center\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42245593137265,"sku":"OPT-L1SET-2","price":547.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Optolong_L1_Dual_Filter_Set.jpg?v=1776459196"},{"product_id":"optolong-l-synergy-dual-sii-oiii-7nm-narrowband-filter-2-l-synergy","title":"Optolong L-Synergy Dual SII\/OIII 7nm Narrowband Filter - 2\" - L-SYNERGY","description":"\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Synergy_Image_1.jpg?v=1759258531\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003ch5 style=\"text-align: center;\"\u003e\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cstrong\u003e\u003cspan\u003eWR134 in the Cygnus constellation © Gianni Lacroce\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h5\u003e\n\u003c\/blockquote\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eThe 2\" Optolong L-Synergy is a dual 7nm narrowband filter compatible with DSLR cameras, color CMOS sensors, and CCD cameras, supporting telescope systems with an F-ratio of f\/3.3 or slower. Its key advantage lies in enabling astrophotography amateurs to capture exceptionally detailed emission nebulae even in light-polluted environments. The L-Synergy filter has been optimized to minimize bright star halos while isolating all emission lines except SII and OIII, achieving maximum effective transmission.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe core innovation of L-Synergy filters lies not in a single functional breakthrough, but rather in the precise combination of traditional dual-narrowband (Ha \u0026amp; OIII) technology—specifically tailored for color camera users. By adopting a dual-filter setup of \"Ha \u0026amp; OIII + SII \u0026amp; OIII\", it overcomes the inherent limitations of color cameras in narrowband astrophotography. With L-Synergy, users can achieve Hubble Palette-style deep-sky images comparable to those captured by monochrome SHO (SII\/Ha\/OIII) systems—without switching to a monochrome camera or purchasing additional SHO filters. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis solution delivers high-quality results with minimal investment, making professional-level narrowband imaging accessible to all.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOptolong L-Synergy's advantage lies in its selective transmission of only the nebula emission lines OIII (500.7nm) and SII (672.4nm), while blocking all other light-polluting emission lines. This ensures that only the signals from oxygen and sulfur elements are captured during imaging, resulting in a darker sky background and significantly enhanced contrast and signal-to-noise ratio (SNR) between nebulae. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEven in heavily light-polluted areas, this filter selectively transmits nebula emission lines while filtering out light pollution, ultimately eliminating its impact on astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBy analyzing the spectral characteristics of both celestial emission lines and light pollution, L-Synergy selectively preserves the SII and OIII nebula colors while filtering out the majority of light pollution. Specifically designed and optically optimized, L-Synergy maintains consistently high transmission across both SII and OIII bands. This ensures users can precisely capture the target nebula emissions, delivering optimal astrophotography results.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Synergy_Transmission_Chart.png?v=1759258531\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42466630500465,"sku":"OPTO-L-SYNERGY","price":433.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Synergy_on_Edge_c0f4d652-e488-43ea-a5ec-6e9549f2e29a.jpg?v=1776459050"},{"product_id":"optolong-l-synergy-l-extreme-dual-narrowband-filter-set-2-l2-dual","title":"Optolong L2 Duo Combo - L-Synergy \u0026 L-eXtreme Duo Narrowband Filters  - 2\" - L2-DUAL-COMBO","description":"\u003cp\u003eThis 2\" imaging filter set includes both the Optolong L-Synergy SII\/OIII 7nm Dual Narrowband Filter \u0026amp; the Optolong L-eXtreme Ha\/OIII 7nm Dual Narrowband Filter.  \u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L2_Combo_Image.jpg?v=1759259652\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003cstrong\u003eNGC 7000 in SHO ©RONALD BRECHER\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Optolong L-eXtreme is a dual-narrowband filter (OIII-7nm \u0026amp; Ha-7nm) designed to exclusively transmit the key nebula emission lines of OIII (500.7nm) and Hα (656.3nm). \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe L-Synergy is a dual-narrowband filter (OIII-7nm \u0026amp; SII-7nm) that guarantees high transmission for both the SII (672.4nm) and OIII (500.7nm) spectral lines.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBy effectively blocking all other light pollution emission lines, both filters ensure that only the signals from their transmission lines are captured during imaging, achieving maximum effective transmission. With years of technological refinement, it significantly optimizes the performance in suppressing bright star halos.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe L2 Dual-Combo Set is engineered to unleash the power of Hubble Palette imaging for color camera users, supporting telescope systems as fast as F3.3 as well as slower systems.  Tailored specifically for color astro cameras, t\u003c\/span\u003e\u003cspan\u003ehis innovative filter combination breaks through the traditional limitations of narrowband imaging with color cameras. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWithout the need to switch to a monochrome camera or invest in an expensive SHO three-filter set, users can achieve stunning Hubble Palette images at a fraction of the cost and complexity.\u003c\/span\u003e\u003cspan\u003eThe core appeal of this combination design lies in lowering barriers and expanding possibilities for colour camera users: it preserves the equipment advantages of colour cameras while enabling users to unlock “Hubble-like” creative capabilities at minimal cost through minimalist filter combination. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSimultaneously, the L2 Dual Combo Set offers greater flexibility for astrophotography. \u003c\/span\u003e\u003cspan\u003eWhether capturing nebular detail or reproducing deep-sky colours, this combination enables richer creative expression, truly unlocking the full potential of colour cameras in deep-sky photography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBased on the characteristics of celestial emission lines and light pollution emission lines, the L2 Dual Combo Set preserves the distinctive colours of nebulae in OIII, Hα, and SII while filtering out the vast majority of light pollution. Specifically designed and optically optimized, its transmission profile is as follows:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L2_Dual_Synergy_eXtreme_Transmission_Chart.png?v=1759259652\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"Default Title","offer_id":42466641870961,"sku":"OPTO-L2-DUAL-COMBO","price":797.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/L-Synergy_L-eXtreme_Filters_1b605aaa-bde2-4377-854e-915a735250f0.jpg?v=1776459215"}],"url":"https:\/\/khanscope.com\/fr\/collections\/optolong-l-synergy-l-combo-dual-filters.oembed","provider":"Khan Scope Centre","version":"1.0","type":"link"}