{"product_id":"skywatcher-1-25-inch-ultra-high-contrast-uhc-filter-20195","title":"OVL 1.25\" Ultra High Contrast (UHC) Filter","description":"\u003ch2\u003eOVL 1.25\" Ultra High Contrast (UHC) Filter – 20195\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eOVL 1.25\" Ultra High Contrast (UHC) Filter\u003c\/strong\u003e is a high-performance narrowband nebula filter designed to improve visibility of faint deep-sky objects while reducing the effects of light pollution. Compatible with \u003cstrong\u003estandard 1.25\" eyepieces\u003c\/strong\u003e, it enhances contrast and reveals greater detail in emission and planetary nebulae, making it an essential accessory for visual astronomers.\u003c\/p\u003e\n\u003cp\u003eManufactured by \u003cstrong\u003eOVL (Optical Vision Ltd)\u003c\/strong\u003e, this filter is ideal for use with small to medium aperture telescopes and performs exceptionally well under suburban and moderately light-polluted skies.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1.25\" narrowband UHC 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\u003eOptimised for use with 1.25\" eyepieces and accessories\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEffective with small and medium aperture telescopes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eImproves nebula visibility without excessive dimming\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupplied with 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 More Detail in Nebulae\u003c\/h2\u003e\n\u003cp\u003eThe OVL UHC filter improves visibility by transmitting key emission wavelengths while blocking unwanted artificial light and skyglow. This increases contrast and allows you to see delicate nebula structures more clearly.\u003c\/p\u003e\n\u003cp\u003eIt is particularly effective when observing popular deep-sky objects such as:\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\u003eDumbbell Nebula (M27)\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-purpose nebula filter for visual astronomy.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOptimised Narrowband Optical Performance\u003c\/h2\u003e\n\u003cp\u003eThe filter selectively isolates important nebular emission lines, 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 improves contrast, darkens background skies, and enhances visibility of faint structures without significantly reducing overall brightness.\u003c\/p\u003e\n\u003cp\u003eCompared to stricter O-III filters, the UHC filter allows more light transmission, making it particularly effective with smaller aperture telescopes.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible with Standard 1.25\" Eyepieces\u003c\/h2\u003e\n\u003cp\u003eThis filter threads directly onto \u003cstrong\u003estandard 1.25\" eyepieces and accessories\u003c\/strong\u003e, making it compatible with a wide range of telescopes, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eRefractor telescopes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNewtonian reflectors\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\u003eMaksutov-Cassegrain telescopes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIt provides improved deep-sky viewing performance across various telescope types.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProtective Storage Included\u003c\/h2\u003e\n\u003cp\u003eThe filter is supplied in a \u003cstrong\u003eprotective storage case\u003c\/strong\u003e, helping to protect the optical surfaces 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\u003e1.25\" 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\u003e1.25\"\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\u003e1.25\" eyepieces and accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Code\u003c\/td\u003e\n\u003ctd\u003e20195\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\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\u003eSmall to medium aperture telescopes\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 deep-sky observing performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Choose the OVL 1.25\" UHC Filter?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eOVL 1.25\" Ultra High Contrast Filter\u003c\/strong\u003e is a highly effective accessory for improving nebula visibility and contrast. Its narrowband design enhances faint deep-sky objects while reducing light pollution, making it an excellent addition to any visual astronomy setup.\u003c\/p\u003e","brand":"OVL","offers":[{"title":"Default Title","offer_id":40066315321441,"sku":"5055534800287","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0554\/9657\/3025\/files\/OVL1.25_UltraHighContrast_UHC_Filter_20195.jpg?v=1771339010","url":"https:\/\/carmarcameras.mom\/products\/skywatcher-1-25-inch-ultra-high-contrast-uhc-filter-20195","provider":"Carmarthen Camera Centre","version":"1.0","type":"link"}