{"product_id":"used-orion-o-iii-eyepiece-filter-1-27","title":"Used Orion O-III Eyepiece Filter, 1.25''","description":"\u003cp\u003eThis is a used Orion O-III filter.  It is in excellent condition, completely clean and unmarked.  It comes in its original jewel case.  \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAny dust you may see in the photos is removable - it seems that these filters develop an electrostatic charge such that the dust in the air is just attracted to the filter.  \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e  \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOrion's Oxygen-III (O-III) eyepiece filter reveals wondrous details when viewing cloudy nebulas\u003c\/li\u003e\n\u003cli\u003eFilter transmits close to 90% of the light corresponding to 2 oxygen-III spectral lines at 496nm and 501nm for enhanced nebula detail in visual views\u003c\/li\u003e\n\u003cli\u003eCompletely blocks virtually all other visible wavelengths of light so views of nebulas are optimized\u003c\/li\u003e\n\u003cli\u003eEyepiece filter features high quality optical glass in a double-threaded, metal filter cell\u003c\/li\u003e\n\u003cli\u003eRecommended for use with telescopes of 8\" aperture or greater for best results and for visual use only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eYou can't turn up the luminosity on nebulas, but you can crank up the contrast between them and the sky to reveal more of their wondrous detail. Our Oxygen-III telescope filter provides extremely selective filtration to bring out elusive detail in diffuse and planetary nebulas. It does so by transmitting close to 90% of the light corresponding to the two oxygen-III spectral lines at 496nm and 501nm while completely blocking virtually all other wavelengths. The results are remarkable. You'll see more detail than you ever could before in nebular gems such as the Swan, Ring, Dumbbell, Helix, and Eagle, to name a few. The O-III provides an even greater contrast boost on some objects than the UltraBlock narrowband telescope filter. And for nebulas, every little bit helps!\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Orion","offers":[{"title":"Default Title","offer_id":49358021263619,"sku":"U2608-XXX-ORN-05581","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/b11cda3d-99a8-4c0e-95bf-8325d0c742e6.jpg?v=1785607771","url":"https:\/\/milehighastro.com\/products\/used-orion-o-iii-eyepiece-filter-1-27","provider":"Mile High Astronomy","version":"1.0","type":"link"}