{"product_id":"celestron-uhc-lpr-filter-2","title":"Celestron UHC\/LPR Filter - 2\"","description":"\u003cp\u003e\u003cspan\u003eThe 2-inch Light Pollution Reduction (LPR) Filters are designed to selectively block wavelengths of light produced by artificial sources, including mercury vapor and high- and low-pressure sodium vapor lamps. They also help reduce unwanted natural skyglow caused by neutral oxygen emissions in the atmosphere.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003eUltra High Contrast (UHC\/LPR) Filter\u003cspan\u003e delivers improved contrast compared to conventional broadband filters, darkening the sky background and enhancing the visibility of emission nebulae. Its advanced optical coatings provide over 97% transmission across the passband while blocking prominent light pollution emission lines. It is ideal for observing nebulae under light-polluted skies or enhancing nebular contrast at dark-sky locations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eKey features that distinguish the UHC\/LPR Filter include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDurable Advanced Coatings:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Plasma-assisted, multilayer dielectric coatings hardened using ion-beam technology provide excellent durability and scratch resistance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHigh Light Transmission:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Maximizes image brightness and contrast, making it especially beneficial for smaller telescopes ranging from 4 to 11 inches in aperture.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eNatural-Looking Views:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Sharp spectral cutoffs and a moderate 60 nm passband preserve rich star fields and subtle nebular details while significantly improving contrast.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eEnhanced H-Alpha Transmission:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The broad passband includes the highly efficient 656 nm H-alpha wavelength, making the filter useful for astronomical imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eWhether observing from light-polluted urban areas or dark-sky locations, the UHC\/LPR Filter helps reveal intricate nebular structures while maintaining excellent image brightness and detail.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ciframe width=\"500\" height=\"300\" src=\"https:\/\/www.youtube.com\/embed\/TXdaXioEdgc\" title=\"What are Eyepiece Filters?\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ciframe width=\"500\" height=\"300\" src=\"https:\/\/www.youtube.com\/embed\/aOdljJ_efOg\" title=\"How to Install an Astronomical Filter\"\u003e\u003c\/iframe\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOur 2\" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengths of light, specifically those produced by artificial light\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":48290526167211,"sku":"94124","price":124.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/8944\/0683\/files\/94124_2-inch_filter_01.webp?v=1792209440","url":"https:\/\/astronomycity.com\/products\/celestron-uhc-lpr-filter-2","provider":"Astronomy City","version":"1.0","type":"link"}