{"product_id":"baader-planetarium-asbf-astrosolar-binocular-filter-od-5-1-clearwhite","title":"Baader Planetarium ASBF – AstroSolar® Binocular Filter OD 5.1 – ClearWhite","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAvailable for 50, 60, 70, 80 \u0026amp; 100mm Aperture Binoculars\u003c\/li\u003e\n\u003cli\u003eAstroSolar® White-Light Film\u003c\/li\u003e\n\u003cli\u003eOptical Density (OD) 5.1 for Visual Safety\u003c\/li\u003e\n\u003cli\u003eClear, Neutral-Color Solar Image\u003c\/li\u003e\n\u003cli\u003eReveals Sunspots and Surface Granulation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section-center\"\u003e\n      \u003ch2\u003eASBF – AstroSolar® Binocular Filter OD 5.1 – ClearWhite\u003c\/h2\u003e\n      \u003cp\u003eThe Baader ASBF AstroSolar® Binocular Filters provide certified OD 5.1 protection, transforming binoculars into a safe and effective instrument for direct solar observation. Offered in 50, 60, 70, 80 and 100mm sizes, from popular 50mm binoculars to large-format astronomy binoculars, they utilize Baader's renowned AstroSolar® film to render a natural, high-contrast white-light image of the Sun.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eAstroSolar® Safety Film: OD 5.1 for Natural White-Light Views\u003c\/h3\u003e\n      \u003cp\u003eAt the core of every ASBF filter is Baader's proprietary AstroSolar® film, which has an optical density of 5.1, blocking 99.999% of incoming sunlight, including harmful UV and IR radiation, to ensure eye safety. Unlike many solar filters that produce an artificially colored orange or yellow image, AstroSolar® film is engineered for a neutral \"ClearWhite\" color balance. This allows you to see the Sun in its natural color, which enhances the visibility of subtle details in sunspot umbrae and penumbrae, as well as surface granulation.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eDesigned for Binoculars from 50mm to 100mm: Turn Your Field Glasses to the Sun\u003c\/h3\u003e\n      \u003cp\u003eASBF filters are designed to fit over the front objectives of binoculars, with each size matched to an aperture class, from 50mm, the most common size for astronomy and nature observation, up to 100mm astronomy binoculars. With a filter securely covering each objective, you can engage in comfortable, two-eyed solar viewing, which reduces eye strain and often reveals more surface detail than single-eye observation. This makes ASBF filters an ideal accessory for safely watching solar eclipses, tracking large sunspot groups, or observing planetary transits across the solar disk.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does Optical Density 5.1 mean for the ASBF filters?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eOptical Density (OD) 5.1\u003c\/strong\u003e is a safety rating that indicates the filter blocks 99.999% of all sunlight, including harmful ultraviolet (UV) and infrared (IR) radiation. This level of attenuation is the international standard for safe, direct visual observation of the Sun through an optical instrument. Every ASBF filter meets this standard, ensuring your eyes are protected.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ASBF filters show the sun in a different color?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo. ASBF filters use Baader's \"ClearWhite\" AstroSolar® film, which is designed to provide a \u003cstrong\u003eneutral, white-light view\u003c\/strong\u003e of the Sun. Unlike some filters that create an artificial orange or yellow image, these filters show the Sun in its natural color, which can make it easier to discern fine details in sunspots and faculae.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich ASBF size fits my binoculars?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eChoose the size that matches your binocular's objective aperture, e.g. the ASBF 50 for 10x50, the ASBF 80 for 15x80, or the ASBF 100 for 25x100 binoculars. Because the physical outer diameter of binocular barrels can vary between manufacturers, it is critical to \u003cstrong\u003emeasure the outside diameter of your binocular's front barrels\u003c\/strong\u003e before ordering to ensure a secure, light-proof fit. Both objectives must be covered, and each filter must fit snugly and not be at risk of falling off during use.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use ASBF filters to watch a total solar eclipse?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAbsolutely. ASBF filters are perfect for observing all partial phases of a solar eclipse. With your binoculars, you can safely watch the Moon's disk move across the Sun. However, you must remove the filters during the brief period of totality to see the solar corona, and immediately replace them as soon as the Sun begins to reappear.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I expect to see on the Sun with ASBF filters on my binoculars?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWith a typical pair of 10x50 binoculars or larger astronomy binoculars and the matching ASBF filters, you can easily resolve key solar features. Depending on solar activity, you can expect to see:\u003c\/p\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eSunspots:\u003c\/strong\u003e You can track the largest sunspot groups and often distinguish the darker inner umbra from the lighter surrounding penumbra.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eGranulation:\u003c\/strong\u003e Under steady atmospheric conditions, you may be able to see the mottled, rice-grain texture of the solar surface.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eLimb Darkening:\u003c\/strong\u003e You will notice the edge of the Sun appears slightly dimmer than the center, a phenomenon known as limb darkening.\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the AstroSolar® film on the ASBF filters durable?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eAstroSolar® film is a specialized polymer that is more durable than many other solar films, but it still requires careful handling. Always inspect the filters for scratches, pinholes, or tears before every use, and never use a damaged filter. Store the filters in a protective case when not in use to prevent damage. With proper care, ASBF filters will provide many years of safe solar viewing.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ch3\u003e50mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eWhite-Light Solar Filter for Binoculars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Fit\u003c\/td\u003e\n\u003ctd\u003e50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003eOD 5.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Color\u003c\/td\u003e\n\u003ctd\u003eNeutral White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e60mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eASBF 60\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eWhite-Light Solar Filter for Binoculars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Fit\u003c\/td\u003e\n\u003ctd\u003e~60mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003eOD 5.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Color\u003c\/td\u003e\n\u003ctd\u003eNeutral White (ClearWhite)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eMatched pair of filter cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e70mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eASBF 70\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eWhite-Light Solar Filter for Binoculars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Fit\u003c\/td\u003e\n\u003ctd\u003e70mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003eOD 5.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Color\u003c\/td\u003e\n\u003ctd\u003eNeutral White (ClearWhite)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e80mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eASBF 80\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eWhite-Light Solar Filter for Binoculars\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture Fit\u003c\/td\u003e\n\u003ctd\u003e~80mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Material\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003eOD 5.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Color\u003c\/td\u003e\n\u003ctd\u003eNeutral White (ClearWhite)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eMatched pair of filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e100mm\u003c\/h3\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eASBF 100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAstroSolar® Safety Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Density\u003c\/td\u003e\n\u003ctd\u003eOD 5.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended For\u003c\/td\u003e\n\u003ctd\u003eBinoculars with ~100mm Aperture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Color\u003c\/td\u003e\n\u003ctd\u003eNeutral White\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cul class=\"DAV-grid\"\u003e\n    \u003cli class=\"DAV-grid-item\"\u003e\n      \u003cdiv\u003e\n        \u003cp class=\"DAV-item-title\"\u003eASBF AstroSolar® Binocular Filter (selected size)\u003c\/p\u003e\n        \u003cp class=\"DAV-item-subtitle\"\u003e× 1 pack\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Baader_Planetarium_AstroSolar_Filter_v1.7_Manual.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"50mm","offer_id":52913251025181,"sku":"BAA-2423025","price":75.0,"currency_code":"CAD","in_stock":true},{"title":"60mm","offer_id":52913251057949,"sku":"BAA-2423026","price":88.0,"currency_code":"CAD","in_stock":true},{"title":"70mm","offer_id":52913251090717,"sku":"BAA-2423027","price":95.0,"currency_code":"CAD","in_stock":true},{"title":"80mm","offer_id":52913251123485,"sku":"BAA-2423028","price":107.0,"currency_code":"CAD","in_stock":true},{"title":"100mm","offer_id":52913251156253,"sku":"BAA-2423029","price":129.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-ASBF-50-AstroSolar-Binocular-Filter-OD-5-1-1_ae260db2-fbe6-4f78-88d6-11b921019fda.jpg?v=1789088750","url":"https:\/\/davidastro.com\/products\/baader-planetarium-asbf-astrosolar-binocular-filter-od-5-1-clearwhite","provider":"David Astro","version":"1.0","type":"link"}