{"product_id":"sky-watcher-2-inch-ultra-high-contrast-uhc-filter-for-telescope-20197","title":"OVL 2\" Ultra High Contrast (UHC) Filter","description":"\u003ch2\u003eOVL 2\" Ultra High Contrast (UHC) Filter – 20197\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eOVL 2\" Ultra High Contrast (UHC) Filter\u003c\/strong\u003e is a highly effective narrowband nebula filter designed to enhance faint deep-sky objects while reducing the effects of light pollution. Compatible with \u003cstrong\u003e2\" eyepieces and accessories\u003c\/strong\u003e, this filter dramatically improves contrast, allowing you to observe greater detail in emission and planetary nebulae—even under suburban or moderately light-polluted skies.\u003c\/p\u003e\n\u003cp\u003eManufactured by \u003cstrong\u003eOVL (Optical Vision Ltd)\u003c\/strong\u003e, this UHC filter is an essential upgrade for visual astronomers seeking clearer, higher-contrast views of deep-sky objects.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e2\" UHC narrowband nebula filter for visual astronomy\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnhances contrast of emission and planetary nebulae\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduces light pollution and background skyglow\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTransmits key nebular wavelengths including O-III and H-Beta lines\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIdeal for use with 2\" eyepieces and telescope accessories\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEffective with both small and large aperture telescopes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied in a protective storage case\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufactured by OVL (Optical Vision Ltd)\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eReveal Faint Nebula Detail\u003c\/h2\u003e\n\u003cp\u003eThe OVL UHC filter enhances visibility by selectively transmitting wavelengths emitted by nebulae while blocking unwanted artificial light. This improves contrast and reveals faint structures that would otherwise be difficult to detect.\u003c\/p\u003e\n\u003cp\u003eIt is particularly effective when observing:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOrion Nebula (M42)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLagoon Nebula (M8)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSwan (Omega) Nebula (M17)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNorth America Nebula (NGC 7000)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMany other emission and planetary nebulae\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis makes it an excellent all-round nebula filter for deep-sky observation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eNarrowband Filtering for Improved Performance\u003c\/h2\u003e\n\u003cp\u003eThe filter isolates key emission lines while suppressing background skyglow, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eOxygen-III (O-III) at 496nm and 501nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHydrogen-Beta (H-β) at 486nm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis targeted transmission increases contrast without excessively dimming the view, making it suitable for a wide range of telescope apertures.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eDesigned for 2\" Eyepieces and Accessories\u003c\/h2\u003e\n\u003cp\u003eThis filter easily threads onto standard \u003cstrong\u003e2\" eyepieces\u003c\/strong\u003e, diagonals, and other compatible accessories, making it suitable for use with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDobsonian telescopes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRefractor telescopes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSchmidt-Cassegrain telescopes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNewtonian reflectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt provides enhanced nebula viewing performance across many telescope types.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProtective Storage Included\u003c\/h2\u003e\n\u003cp\u003eSupplied with a \u003cstrong\u003edurable protective storage case\u003c\/strong\u003e, the filter remains safe from dust, scratches, and damage when not in use.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003e2\" Ultra High Contrast (UHC) Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eOVL (Optical Vision Ltd)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eNarrowband Nebula Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey Transmission Lines\u003c\/td\u003e\n\u003ctd\u003eO-III (496nm, 501nm), H-Beta (486nm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003e2\" eyepieces and accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003e20197\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eIdeal For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eVisual observation of emission and planetary nebulae\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImproving contrast under light-polluted skies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDeep-sky observing with 2\" eyepieces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBeginner and experienced astronomers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnhancing nebula visibility and detail\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the OVL 2\" UHC Filter?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eOVL 2\" Ultra High Contrast Filter\u003c\/strong\u003e is an essential accessory for astronomers who want to reveal more detail in nebulae while reducing the effects of light pollution. Its narrowband performance, high optical quality, and compatibility with 2\" eyepieces make it an excellent addition to any visual astronomy setup.\u003c\/p\u003e","brand":"OVL","offers":[{"title":"Default Title","offer_id":40066314502241,"sku":"5055534800300","price":59.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/products\/OVL_2_Ultra_High_Contrast_UHC_Filter.jpg?v=1771337986","url":"https:\/\/carmarcameras.mom\/products\/sky-watcher-2-inch-ultra-high-contrast-uhc-filter-for-telescope-20197","provider":"Carmarthen Camera Centre","version":"1.0","type":"link"}