{"product_id":"daystar-universal-lens-filter-binoculars-set-of-two","title":"Daystar Universal Lens Filter for Binoculars - Set of Two","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eSet of two filters for binoculars, spotting scopes and camera lenses\u003c\/li\u003e\n\u003cli\u003eChoice of 50mm, 70mm or 90mm clear aperture\u003c\/li\u003e\n\u003cli\u003eFits optics from 50mm to 109mm outer diameter, depending on size\u003c\/li\u003e\n\u003cli\u003eISO 12312-2:2015 certified Thousand Oaks film\u003c\/li\u003e\n\u003cli\u003eND 5 film rejects 99.999% of sunlight\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\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\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\u003eUniversal Lens Filter for Binoculars - Set of Two\u003c\/h2\u003e\n\u003cp\u003eEach set contains two Universal Lens Filters, so both barrels of a pair of binoculars are covered for safe, two-eyed solar viewing. The filters are made with ND 5 film from Thousand Oaks Optical that is ISO 12312-2:2015 certified for direct solar observation, rejecting 99.999% of incoming sunlight. Three aperture sizes cover optics from 50mm to 109mm in outer diameter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eChoosing Your Size: Measure the Outer Diameter, Not the Aperture\u003c\/h3\u003e\n\u003cp\u003eThe size you need depends on the physical width of your objective barrels, not on the advertised aperture of your binoculars. Measure the outside of the barrel with a ruler or calipers and match it to the range below.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50mm set:\u003c\/strong\u003e fits optics with a 50mm to 69mm outer diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e70mm set:\u003c\/strong\u003e fits optics with a 65mm to 89mm outer diameter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e90mm set:\u003c\/strong\u003e fits optics with an 85mm to 109mm outer diameter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA common mistake is assuming 10x50 binoculars need the 50mm set. Many 50mm binoculars have barrels wider than 69mm once the housing is included, which puts them in the 70mm set's range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eISO 12312-2:2015 Certified Film: 99.999% Rejection\u003c\/h3\u003e\n\u003cp\u003eThese filters use film from Thousand Oaks Optical, a supplier listed on the American Astronomical Society's \"Reputable Vendors of Solar Filters,\" ensuring compliance with the highest safety standards. The ISO 12312-2:2015 certified material is rated ND 5 and blocks 99.999% of the Sun's energy, rendering a view that is safe for direct observation of the photosphere.\u003c\/p\u003e\n\u003cp\u003eThe film renders the Sun in a crisp, high-contrast orange tint, which makes it easy to pick out large sunspot groups and to follow the Moon's silhouette across the disk during an eclipse.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eA Simple, Secure Fit for Binoculars and Lenses\u003c\/h3\u003e\n\u003cp\u003eEach filter folds into a shallow cup that slides over the front of a binocular barrel, camera lens or small spotting scope, creating a secure friction fit without any threads or adapters to match. The filters ship flat, weigh almost nothing, and are an affordable way to prepare optics you already own for a solar eclipse or a session of sunspot watching.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eUniversal Film vs. Dedicated Glass Filters: Portability and Affordability\u003c\/h3\u003e\n\u003cp\u003eWhile thread-in or cell-mounted glass solar filters offer maximum durability, these universal film filters present a different set of advantages for the occasional solar observer or eclipse chaser.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAffordability:\u003c\/strong\u003e Film filters are a fraction of the cost of glass filters, making them an accessible entry point for safe solar viewing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatility:\u003c\/strong\u003e A single set can be used on any instrument within its diameter range, from binoculars to telephoto camera lenses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePortability:\u003c\/strong\u003e The filters ship flat and are extremely lightweight, making them easy to pack for travel to an eclipse viewing location without risk of breakage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhich size do I need for my binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eMeasure the \u003cstrong\u003eouter diameter\u003c\/strong\u003e of your objective barrels, not the aperture. The \u003cstrong\u003e50mm set\u003c\/strong\u003e fits 50-69mm, the \u003cstrong\u003e70mm set\u003c\/strong\u003e fits 65-89mm, and the \u003cstrong\u003e90mm set\u003c\/strong\u003e fits 85-109mm. Many 10x50 binoculars measure wider than 69mm across the housing and need the 70mm set, so measure before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I install the Universal Lens Filters on my binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eEach filter ships flat and is designed to fold into a shallow cup. You shape it and press it over the front barrel of each objective lens, where the folded material creates a secure friction fit. Ensure both filters are snug and cannot be accidentally dislodged before pointing the instrument at the Sun.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the orange view from the Universal Lens Filter normal?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. The specific polymer used in this ISO-certified solar film is engineered to produce a pleasant, high-contrast orange-yellow image of the Sun. This is the standard appearance for most visual and photographic solar film filters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use these filters to photograph the Sun?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The film is rated at a neutral density of 5 (ND 5), which is safe for both direct viewing and imaging with DSLR or mirrorless cameras. Fit one filter over your camera lens, provided the lens barrel's outer diameter falls within the range of the size you ordered.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre these filters safe for viewing a total solar eclipse?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, for every partial phase. The film is certified to \u003cstrong\u003eISO 12312-2:2015\u003c\/strong\u003e, and the filters must stay on your optics whenever any part of the Sun's bright photosphere is visible. They may only be removed during the brief period of totality, and must go back on the instant the first sliver of Sun reappears.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow should I store the filters when not in use?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUnfold them and store them flat, ideally in the rigid mailer they arrive in, to protect the film from creases and scratches. Before every use, hold each filter up to a bright indoor light and inspect it for pinholes, scratches or tears. \u003cstrong\u003eIf the film is damaged in any way, discard the filter immediately.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct\u003c\/td\u003e\n\u003ctd\u003eUniversal Solar Lens Filter, Binocular Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003e2 Filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClear Aperture Options\u003c\/td\u003e\n\u003ctd\u003e50mm, 70mm or 90mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit Range (Outer Diameter)\u003c\/td\u003e\n\u003ctd\u003e50-69mm (50mm set), 65-89mm (70mm set), 85-109mm (90mm set)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilm Material\u003c\/td\u003e\n\u003ctd\u003eThousand Oaks Optical Solar Film\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilm Density\u003c\/td\u003e\n\u003ctd\u003eND 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Rejection\u003c\/td\u003e\n\u003ctd\u003e99.999%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Certification\u003c\/td\u003e\n\u003ctd\u003eISO 12312-2:2015\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Color\u003c\/td\u003e\n\u003ctd\u003eOrange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\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\"\u003eUniversal Lens Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"50mm","offer_id":52935171146013,"sku":"DAY-ULF50-2","price":35.0,"currency_code":"CAD","in_stock":true},{"title":"70mm","offer_id":52935171178781,"sku":"DAY-ULF70-2","price":42.0,"currency_code":"CAD","in_stock":true},{"title":"90mm","offer_id":52935171211549,"sku":"DAY-ULF90-2","price":56.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/DaystarFilters-Universal-Lens-Filter-50mm-aperture-BINOCULAR-SET-of-TWO-2-each-1_b14aa49b-0628-4ce0-b078-c91efe4af24c.jpg?v=1789520910","url":"https:\/\/davidastro.com\/products\/daystar-universal-lens-filter-binoculars-set-of-two","provider":"David Astro","version":"1.0","type":"link"}