{"product_id":"set-filtri-idas-sho-508mm","title":"IDAS SHO Filter Set 50.8mm","description":"\u003ch2\u003eComplete set of three narrowband filters for SHO imaging\u003c\/h2\u003e\u003cp\u003eIDAS's SHO set brings together three interference filters dedicated to the narrowband imaging technique known as the Hubble palette: ionized hydrogen (H-alpha), doubly ionized oxygen (OIII), and ionized sulfur (SII). Combining the three monochrome exposures in false color produces very high-contrast images of emission nebulae, with a distinctive color rendition highly valued in deep-sky astrophotography.\u003c\/p\u003e\u003ch3\u003eNarrow, targeted transmission bands\u003c\/h3\u003e\u003cp\u003eEach filter isolates a very small portion of the spectrum around its own emission line, blocking nearly all stray light from light pollution and airglow. This makes the set particularly effective even from urban or suburban skies, where traditional broadband filters perform less well.\u003c\/p\u003e\u003ch3\u003eIGAD coating for long-term stability\u003c\/h3\u003e\u003cp\u003eLike the other filters in the IDAS range, the SHO set uses IGAD coating technology, which ensures a transmission curve that stays stable over time even under strong temperature and humidity swings.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eH-alpha bandwidth\u003c\/td\u003e\u003ctd\u003e6.8 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOIII bandwidth\u003c\/td\u003e\u003ctd\u003e6.0 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSII bandwidth\u003c\/td\u003e\u003ctd\u003e6.3 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter size\u003c\/td\u003e\u003ctd\u003e50.8 mm (2\")\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eGlass thickness\u003c\/td\u003e\u003ctd\u003e3 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eIGAD multi-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eSHO\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eNarrowband (line) filter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSet suitable for narrowband astrophotography of emission nebulae and supernova remnants with telescopes fitted with a 2\" focuser, both under dark skies and in light-polluted conditions. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887865438539,"sku":"ID76810","price":1490.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/IDAS-Filters-SHO-Filter-Set-50-8mm_e279b3b4-3f1a-4568-8eee-3196db7276ff.jpg?v=1784290337","url":"https:\/\/adriasky.it\/en\/products\/idas-sho-filter-set-508mm","provider":"Adriasky","version":"1.0","type":"link"}