{"product_id":"explore-scientific-01-14200","title":"Explore Scientific BT-70 SF Large Binoculars with 62 Degree LER Eyepieces","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLarge Aperture Objective Lenses\u003c\/li\u003e\n\u003cli\u003eInterchangeable 1.25\" Eyepiece Compatibility\u003c\/li\u003e\n\u003cli\u003eComfortable 45-Degree Angled Viewing\u003c\/li\u003e\n\u003cli\u003eWaterproof and Nitrogen-Purged Magnesium Housing\u003c\/li\u003e\n\u003cli\u003eIndividual Helical Focusers\u003c\/li\u003e\n\u003cli\u003eExtendable Dew Shields\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\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\u003eBT-70 SF Large Binoculars with 62 Degree LER Eyepieces\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific BT-70 SF Large Binoculars deliver an immersive, three-dimensional viewing experience for both astronomy and terrestrial observation. By dedicating a complete optical system to each eye, these binoculars produce bright, high-contrast images and eliminate the fatigue associated with single-eyepiece viewing. Their large objective lenses gather substantial light, revealing faint celestial objects in the night sky and rendering distant landscapes with exceptional clarity.\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\u003eImmersive, Fatigue-Free Views with Dual Optical Paths\u003c\/h3\u003e\n\u003cp\u003eUnlike a conventional telescope, the BT-70 SF uses two independent optical paths to create a true binocular view. This approach provides a remarkable sense of depth and realism, whether you are scanning the star fields of the Milky Way or observing distant wildlife. This design significantly reduces eye strain during long observing sessions, allowing you to focus on the view in comfort.\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\u003eAdaptable Optics: Swap Eyepieces and Filters\u003c\/h3\u003e\n\u003cp\u003eA key feature of the BT-70 SF is its ability to accept standard 1.25\" astronomical eyepieces. This allows you to change magnification by simply swapping eyepiece pairs, tailoring the instrument's power to your target. You can go from a wide-field, low-power view for sweeping star clusters to high-power for resolving details on the Moon. The standard filter threads on the eyepieces also permit the use of color or nebula filters to enhance contrast on specific objects.\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\u003eDesigned for Comfort: Angled Viewing and Helical Focus\u003c\/h3\u003e\n\u003cp\u003eThe eyepieces are set at a comfortable 45° angle, which is essential for astronomical viewing. This orientation prevents neck strain when observing objects high overhead. Each eyepiece has its own fine helical focuser for precise, independent adjustment, ensuring a perfectly sharp image for your eyes. The binoculars also feature an integrated carrying handle for secure transport and extendable dew caps to block stray light and reduce moisture buildup on the lenses.\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\u003eAll-Weather Reliability: Nitrogen-Purged and Waterproof Housing\u003c\/h3\u003e\n\u003cp\u003eBuilt for the rigors of outdoor use, the BT-70 SF features a lightweight yet robust magnesium housing. The optical tubes are sealed and purged with inert nitrogen gas, which prevents internal fogging of the lenses during temperature changes or in humid conditions. This IPX6-rated waterproof construction ensures that your investment is protected from dew, frost, and unexpected rain, making them a reliable tool for any observing environment.\u003c\/p\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\"\u003eWhat makes the Explore Scientific BT-70 SF Large Binoculars good for astronomy?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe BT-70 SF's large objective lenses gather significantly more light than standard binoculars, revealing fainter stars, nebulae, and galaxies. The comfortable 45° angled view is ideal for looking up at the night sky without neck strain, and the ability to use two eyes provides a more immersive, 3D-like experience while reducing eye fatigue during long sessions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Explore Scientific BT-70 for daytime terrestrial viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, absolutely. These binoculars are excellent for long-distance terrestrial observation, such as bird watching, viewing ships at sea, or taking in detailed landscapes. The high-contrast optics and true-to-life stereo view make them a powerful tool for any daytime observer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the interchangeable eyepiece system on the BT-70 SF work?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe BT-70 SF is designed to accept pairs of standard 1.25\" astronomical eyepieces. This allows you to vary the magnification for different targets. For example, you can use a pair of low-power, wide-field eyepieces for scanning the Milky Way, then switch to a high-power pair to get a closer look at Jupiter's moons. This versatility makes it far more flexible than fixed-magnification binoculars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of tripod is recommended for the BT-70 SF Large Binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDue to their size and weight, a sturdy tripod is essential for stable, shake-free viewing. A robust photo or video tripod with a high payload capacity is a minimum requirement. For the best experience, especially for astronomy, the optional \u003cstrong\u003eExplore Scientific U-Mount with Field Tripod\u003c\/strong\u003e is recommended, as it is designed specifically to handle large binoculars like the BT-70.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of the BT-70 SF's dual optical systems?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eUsing two eyes provides several key benefits: a more natural and comfortable viewing experience, reduced eye strain over long periods, and an enhanced perception of depth. This makes views feel more three-dimensional and immersive compared to looking through a single-eyepiece telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do the BT-70 SF binoculars perform when viewing the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThey provide stunning views of the Moon. By using a pair of higher-magnification eyepieces, you can explore craters, mountains, and maria in sharp detail. The 3D-like effect from binocular viewing makes the lunar landscape appear to float in space. For even greater contrast, you can add a pair of neutral density or \"moon\" filters to the eyepieces to reduce glare.\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\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e00811803033917\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\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Explore_Scientific_01-14200_BT-70_SF_Large_Binoculars_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\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\/Explore_Scientific_01-14200_BT-70_SF_Large_Binoculars_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\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909237731613,"sku":"ES-01-14200","price":2380.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-BT-70-SF-Large-Binoculars-with-62-Degree-LER-Eyepieces-1_64ac8535-a61b-4aa2-9ed3-6aeac42a70ea.jpg?v=1789060860","url":"https:\/\/davidastro.com\/fr\/products\/explore-scientific-01-14200","provider":"David Astro","version":"1.0","type":"link"}