{"product_id":"used-orion-1-25-ultrablock-narrowband-filter-3","title":"Used Orion 1.25\" UltraBlock NarrowBand Filter","description":"\u003cp\u003eThis is a used Orion Ultrablock filter made in Korea.  It is in excellent condition, with clean glass and body.  It includes a filter 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\u003cp\u003e     \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIn areas plagued with significant light pollution, our UltraBlock eyepiece filter greatly increases contrast of emission and planetary nebulas\u003c\/li\u003e\n\u003cli\u003eAllows you to see features and details through a telescope that would normally be lost due to light pollution\u003c\/li\u003e\n\u003cli\u003eBlocks all forms of light pollution while passing critical hydrogen-beta and ionized oxygen wavelengths of light\u003c\/li\u003e\n\u003cli\u003eEnhances the sky presence of a significant number of fainter deep-sky objects\u003c\/li\u003e\n\u003cli\u003eUse with any filter-thread equipped 1.25\" Orion eyepiece. Metal filter cell construction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1.25\" Orion UltraBlock Narrowband telescope eyepiece filter is the filter of choice for deep-sky observers viewing from highly light-polluted sites.\u003c\/p\u003e\n\u003cp\u003eLight pollution can significantly decrease the quality of telescopic views of deep-sky objects. The UltraBlock filter blocks all forms of light pollution from incandescent and fluorescent lighting, including mercury vapor and sodium emission bands, while passing critical hydrogen-beta and ionized oxygen wavelengths. With an UltraBlock telescope eyepiece filter, emission and planetary nebulas \"surface\" from the washed-out background sky seen from light-polluted areas. With contrast increased, you'll be able to discern more detail in deep-sky observations.\u003c\/p\u003e\n\u003cp\u003eIn dark skies, the UltraBlock also enhances the sky presence of a significant number of fainter deep-sky celestial objects. You'll see more of these faint nebulas, galaxies, and clusters with an UltraBlock compared to unfiltered and wideband-filtered views. You'll simply see more with an Orion UltraBlock filter!\u003c\/p\u003e\n\u003cp\u003eThe handy 1.25\" UltraBlock filter can be installed on any 1.25\" filter-threaded telescope eyepiece.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Orion","offers":[{"title":"Default Title","offer_id":49358361592067,"sku":"U2608-XXX-ORN-05654","price":50.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1979\/5379\/files\/00f089ac-0fc1-4892-8f35-87dc5f1c5e21.jpg?v=1785614773","url":"https:\/\/milehighastro.com\/products\/used-orion-1-25-ultrablock-narrowband-filter-3","provider":"Mile High Astronomy","version":"1.0","type":"link"}