{"product_id":"oxygen-iii-narrowband-filter-2-round-mounted-93624","title":"Celestron Oxygen III Narrowband Filter - 2\" Round Mounted - 93624","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eAbout the Celestron Oxygen III Narrowband Filter - 2\"...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eThe \u003cb\u003eCelestron OIII Narrowband Telescope Filter\u003c\/b\u003e isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is extreme contrast between the black sky background and the faint photons of OIII light needed for detailed views of the Veil, Ring, Dumbbell, Crescent and Orion nebulae, among other objects.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eEach \u003cb\u003eCelestron OIII Narrowband Telescope Filter\u003c\/b\u003e has an ultra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm This eliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e(Psssst! If you have ever wondered how to see the Helix Nebula with your telescope, this is the way! ;)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron Oxygen III Narrowband Filter - 2\" Features...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIsolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eBlocks the rest of the overall spectrum of light\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eEliminates the un-natural colored halos surrounding bright stars common with O III filters of less sophisticated coating technology\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eUltra hard, vacuum-deposited coating carefully designed to block all of the visual spectrum ranging from 400 to 700 nm\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e2\" round threaded cell design fits almost all standard 2\" telescope eyepieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ccenter\u003e\n\u003ch2\u003eCelestron Oxygen III Narrowband Filter - 2\" Specifications...\u003c\/h2\u003e\n\u003c\/center\u003e\n\u003cp\u003eFilter Type: OIII Narrowband\u003c\/p\u003e\n\u003cp\u003eFormat: Round Mounted\u003c\/p\u003e\n\u003cp\u003eSize: 2\"\u003c\/p\u003e\n\u003cp\u003eConstruction: Threaded Aluminum Cell\u003c\/p\u003e\nCelestron Product Number: 93624","brand":"Celestron","offers":[{"title":"Default","offer_id":10552730817,"sku":"CEL-93624","price":111.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/products\/972-1-thumb.jpeg?v=1776459152","url":"https:\/\/khanscope.com\/en-fr\/products\/oxygen-iii-narrowband-filter-2-round-mounted-93624","provider":"Khan Scope Centre","version":"1.0","type":"link"}