{"product_id":"william-optics-stc-astro-duo-narrowband-filter-48-mm-yf-stc-adn","title":"William Optics STC Astro Duo-Narrowband Filter - 48 mm - YF-STC-ADN","description":"\u003ch3 style=\"text-align: center;\"\u003eWilliam Optics STC Astro Duo-Narrowband Filter - 48 mm\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTC Astro Duo-Narrowband Filter from William Optics\u003c\/li\u003e\n\u003cli\u003e48 mm Size\u003c\/li\u003e\n\u003cli\u003eClip Filter - Dual Band type\u003c\/li\u003e\n\u003cli\u003eLight pollution type filter\u003c\/li\u003e\n\u003cli\u003eEnhances H-alpha and Oxygen III wavelengths\u003c\/li\u003e\n\u003cli\u003eProfessional Ion Beam-assisted deposition and AR-coating technology\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a William Optics STC Astro Duo-Narrowband Filter - 48 mm size. STC Astro Duo-Narrowband filter can reduce the interference from artificial lighting (man made light pollution) in the city, and enhance the wave length of Hα and OIII. IBAD (Ion beam-assisted deposition) coating technology makes the glass higher durability and easily cleaning, and preventing aging variation in optical spectral characteristics due to temperature and humidity change. The Matte black Anodized and Teflon-coated frame design eliminates flare and is also very easy to install or remove from your lens.\u003c\/p\u003e\n\u003cp\u003eAstro Duo-Narrowband filters are designed to capture specific wavelengths of gaseous and planetary nebulae. Of particular interest to astrophotographers is the Hα emission line at 656 nm and OIII lines at 500 nm, performing high transmission and rejecting light pollution as well as the important blocking of longer wavelengths. It brings more detail and contrast in your image. The professional Ion Beam-assisted deposition and AR coating technology is applied on Schott optical glass, to ensure highest possible level of durability and also excellent image quality.\u003c\/p\u003e\n\u003cp\u003eMatte black anodized and Teflon-coated frame design eliminates flare and easy to install or remove from your lens.\u003c\/p\u003e\n\u003ch3 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMfr. SKU:\u003c\/td\u003e\n\u003ctd\u003eYF-STC-ADN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction:\u003c\/td\u003e\n\u003ctd\u003eSTC Astro Duo-Narrowband Filter - 48 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits:\u003c\/td\u003e\n\u003ctd\u003eStandard 48 mm diam. barrel threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccepts:\u003c\/td\u003e\n\u003ctd\u003eStandard 2\" eyepieces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type:\u003c\/td\u003e\n\u003ctd\u003e48 mm, Clip Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eSCHOTT B270 Optical Glass, Aluminum 6061 Rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Type:\u003c\/td\u003e\n\u003ctd\u003eWilliam Optics STC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThickness:\u003c\/td\u003e\n\u003ctd\u003e1 mm Glass, 3.5 mm for Rim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"William Optics","offers":[{"title":"Default Title","offer_id":39561984180337,"sku":"WIL-YF-STC-ADN","price":424.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/astro-duo-nb_cover_02.jpg?v=1776458975","url":"https:\/\/khanscope.com\/en-fr\/products\/william-optics-stc-astro-duo-narrowband-filter-48-mm-yf-stc-adn","provider":"Khan Scope Centre","version":"1.0","type":"link"}