{"title":"Explore Scientific BT Giant Binoculars","description":"\u003cp\u003eExplore Scientific BT giant binoculars are large binocular telescopes with angled, interchangeable eyepieces, built for comfortable two-eyed astronomy. The range includes the BT-82 ED, BT-120 ED and BT-150 ED with ED objectives, plus the BT-120 SF and the BT-70 SF supplied with 62° LER eyepieces.\u003c\/p\u003e\u003cp\u003eBinoculars this size need a solid support, and the U-Mount and Tripod for the BT 150 is part of this collection. Typical targets are Milky Way star fields, comets and large clusters seen with both eyes.\u003c\/p\u003e","products":[{"product_id":"explore-scientific-01-14260","title":"Explore Scientific BT 150mm ED Giant Binocular","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDual 150mm Objective Lenses\u003c\/li\u003e\n\u003cli\u003ePremium Extra-Low Dispersion (ED) Glass\u003c\/li\u003e\n\u003cli\u003eAccepts Interchangeable 1.25-inch Eyepieces\u003c\/li\u003e\n\u003cli\u003eIncludes a Pair of Starter Eyepieces\u003c\/li\u003e\n\u003cli\u003eDesigned for Astronomical and Terrestrial Viewing\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\u003eExplore Scientific BT 150mm ED Giant Binocular\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific BT 150mm ED Giant Binocular combines two independent 150mm optical systems with premium Extra-Low Dispersion (ED) glass to deliver an unparalleled two-eyed view of the cosmos. This instrument uses standard 1.25-inch eyepieces and includes a starter pair, creating an immersive viewing experience that a single-aperture telescope cannot replicate.\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\u003eDual 150mm ED Optics: Apochromatic Views with Two Eyes\u003c\/h3\u003e\n\u003cp\u003eEach of the binocular's 150mm objectives gathers a tremendous amount of light, revealing faint deep-sky objects with surprising clarity. The use of premium ED glass corrects for chromatic aberration, virtually eliminating the false color halos that can fringe bright objects like Jupiter, Sirius, or the lunar limb. This results in sharper, higher-contrast images with true-to-life color, allowing you to resolve finer details in planetary cloud bands and intricate nebulosity.\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 Viewing and 1.25\" Eyepiece Versatility\u003c\/h3\u003e\n\u003cp\u003eObserving with both eyes open is more natural and comfortable, reducing eye strain during long sessions and creating a sense of three-dimensional depth on objects like the Orion Nebula (M42) or the Hercules Cluster (M13). The BT 150mm ED features standard 1.25-inch helical focusers, allowing you to use your own collection of eyepieces to vary the magnification for any target. A critical consideration is its size; this instrument requires a substantial mounting system, such as the Explore Scientific U-Mount, to provide the necessary stability for high-power viewing.\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\u003eBT-150mm Binocular vs. a Single Large Telescope\u003c\/h3\u003e\n\u003cp\u003eWhile a single large-aperture telescope like a 10-inch or 12-inch Dobsonian will have more raw light-gathering power for the faintest galaxies, the BT 150mm ED offers a uniquely engaging experience. The binocular view is often described as more \"walk-in\" and immersive, particularly on large, bright objects.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBinocular Advantage:\u003c\/strong\u003e The two-eyed view provides enhanced contrast perception and a 3D-like effect on star clusters and nebulae. The ED optics deliver refractor-like, high-contrast views free of chromatic aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Telescope Advantage:\u003c\/strong\u003e A larger monolithic mirror will resolve fainter objects and offer higher potential magnification on nights of good seeing. It is often a more portable and cost-effective solution for maximizing aperture.\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\"\u003eWhat kind of mount is required for the Explore Scientific BT 150mm ED Giant Binocular?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eDue to its significant size and weight, the BT 150mm ED requires a very stable, heavy-duty mount. A conventional photo tripod is insufficient. It is specifically designed to be paired with a robust platform like the \u003cstrong\u003eExplore Scientific U-Mount with Tripod\u003c\/strong\u003e (sold separately), which provides smooth, stable motion for navigating the sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do views through the BT 150mm ED compare to a large Dobsonian telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA large Dobsonian will show fainter objects due to its greater light-gathering area. However, the BT 150mm ED provides a more comfortable, immersive experience with a perceived increase in contrast and a 3D-like effect on many objects. The ED glass also ensures apochromatic, high-fidelity views, especially on the Moon and planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat can I see with the included eyepieces on the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the included starter eyepieces, the BT 150mm ED will frame the Orion Nebula (M42) beautifully. You can expect to see the four primary stars of the Trapezium clearly resolved, surrounded by intricate lanes of glowing gas and dust. The two-eyed view enhances the perception of depth within the nebula's structure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use other 1.25-inch eyepieces with the BT 150mm ED binocular?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The binocular is equipped with standard 1.25-inch helical focusers, making it compatible with the vast majority of 1.25-inch astronomical eyepieces. This allows you to easily switch between low-power, wide-field views and high-power magnifications for planetary and lunar detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main benefit of ED glass in the BT 150mm ED binocular?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary benefit of \u003cstrong\u003eExtra-Low Dispersion (ED)\u003c\/strong\u003e glass is the correction of chromatic aberration. This means you will not see distracting purple or blue fringing around bright objects. The result is a sharper, higher-contrast image with more accurate color, which is especially important for observing the Moon, planets, and bright double stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the BT 150mm ED suitable for viewing planets like Jupiter and Saturn?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The apochromatic ED optics provide excellent, high-contrast views of planets. With appropriate high-magnification eyepieces (not included), you can expect to resolve Jupiter's main cloud bands and its four Galilean moons, as well as the rings of Saturn and the Cassini Division on a clear night.\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\u003e811803036949\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\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":52909230129437,"sku":"ES-01-14260","price":14000.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-BT-150mm-ED-Giant-Binocular-1_adafd632-3fed-42d8-8f8b-80e9850491f5.jpg?v=1789060812"},{"product_id":"explore-scientific-01-14250","title":"Explore Scientific BT-120mm ED Giant Binocular","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eTwin 120mm ED Apochromatic Objectives\u003c\/li\u003e\n\u003cli\u003eInterchangeable 1.25\" Eyepiece Holders\u003c\/li\u003e\n\u003cli\u003eIncludes Starter Eyepiece Pair\u003c\/li\u003e\n\u003cli\u003eReduces Eye Strain for Long Sessions\u003c\/li\u003e\n\u003cli\u003eRequires a Substantial U-Fork or Centerline Mount\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\u003eExplore Scientific BT-120mm ED Giant Binocular\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific BT-120mm ED Giant Binocular uses twin 120mm objective lenses with Extra-Low Dispersion (ED) glass to produce an immersive, two-eyed view of the cosmos free of false color. Its individual helical focusers and interchangeable eyepiece holders accept standard 1.25-inch astronomical eyepieces, allowing you to tailor magnification for sweeping views of the Milky Way or detailed observations of planetary surfaces.\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\u003eTwin 120mm ED Objectives: Apochromatic Views of the Deep Sky\u003c\/h3\u003e\n\u003cp\u003eAt the heart of the BT-120mm ED are two massive 120mm air-spaced triplet objectives. This immense aperture gathers significant light, resolving faint details in distant galaxies and revealing the delicate structures within nebulae like the Veil Nebula (NGC 6960). The use of premium ED glass virtually eliminates chromatic aberration, the false color fringing seen around bright objects in simpler designs.\u003c\/p\u003e\n\u003cp\u003eThis apochromatic correction ensures stars resolve as sharp points against a black background, and high-contrast targets like Jupiter's cloud bands and the lunar terminator are rendered with impressive clarity and true-to-life color. The result is a clean, high-contrast image that holds up even at higher magnifications.\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\u003e1.25\" Eyepiece Compatibility: Tailor Your Magnification\u003c\/h3\u003e\n\u003cp\u003eUnlike fixed-magnification binoculars, the BT-120mm ED accepts interchangeable 1.25-inch eyepieces, giving you complete control over your field of view and magnification. This system allows you to adapt the instrument to any target, from wide-field sweeps to high-power planetary observation. The binocular includes a pair of starter eyepieces to get you observing immediately.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Power Viewing:\u003c\/strong\u003e Use long focal length eyepieces to frame large objects like the Andromeda Galaxy (M31) or the North American Nebula (NGC 7000) in their entirety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Power Viewing:\u003c\/strong\u003e Switch to shorter focal length eyepieces to increase magnification for splitting tight double stars like Albireo (Beta Cygni) or resolving globular clusters like the Hercules Cluster (M13).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMounting the BT-120mm ED: A Requirement for Stability\u003c\/h3\u003e\n\u003cp\u003eDue to its considerable size and weight, the BT-120mm ED is designed exclusively for mounted use. A stable platform is not just recommended; it is essential to realizing the optical potential of this instrument. Hand-holding is not a viable option.\u003c\/p\u003e\n\u003cp\u003eThese binoculars are optimized for use with a robust fork mount, such as the Explore Scientific U-Mount with tripod, which provides the necessary stability and allows for smooth, intuitive pointing across the sky. Please note that a mount and tripod are not included with the binoculars and must be purchased separately.\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\u003eBT-120mm ED vs. a Single 120mm Refractor: The Two-Eyed Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile a single 120mm apochromatic refractor offers excellent views, the binocular configuration of the BT-120mm ED provides a distinctly different and often more engaging observing experience.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Telescope Advantage:\u003c\/strong\u003e A traditional 120mm refractor is typically lighter, requires a less specialized mount, and is more easily adapted for astrophotography.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBT-120mm ED Advantage:\u003c\/strong\u003e Observing with both eyes significantly reduces eye strain and fatigue during long sessions. More importantly, the brain's ability to process information from two eyes enhances perceived contrast and detail, often making faint objects appear more distinct and giving a subtle 3D-like quality to star clusters and nebulae.\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\"\u003eWhat kind of mount do I need for the Explore Scientific BT-120mm ED binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need a very stable, high-capacity mount specifically designed for giant binoculars. The Explore Scientific U-Mount on a heavy-duty tripod is the recommended solution. Standard photographic tripods or light-duty telescope mounts will not provide adequate support for the BT-120mm ED's size and weight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my existing 1.25\" telescope eyepieces with the BT-120mm ED?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The BT-120mm ED features standard 1.25-inch eyepiece holders with individual helical focusers. You can use any pair of matching 1.25\" astronomical eyepieces to change the magnification and field of view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the view through the BT-120mm ED compare to a large single telescope like a 10\" Dobsonian?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA 10-inch Dobsonian has significantly more light-gathering power and will show fainter objects. However, the \u003cstrong\u003eBT-120mm ED\u003c\/strong\u003e provides a wide-field, two-eyed perspective that many observers find more comfortable and immersive for sweeping through the Milky Way or observing large star clusters and nebulae. The two-eyed view can also enhance perceived contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of ED glass in these 120mm binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003e\u003cstrong\u003eExtra-Low Dispersion (ED) glass\u003c\/strong\u003e corrects for chromatic aberration, which is false color fringing (typically purple or blue halos) around bright objects. This results in sharper, higher-contrast images with more accurate color, especially noticeable when observing the Moon, planets like Jupiter, and bright stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Orion Nebula (M42) look through the BT-120mm ED with low-power eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith its large 120mm aperture and a pair of low-power, wide-field eyepieces, the BT-120mm ED will frame the Orion Nebula (M42) beautifully. You can expect to see the bright Trapezium star cluster resolved at the core, surrounded by the sweeping arcs of nebulosity, all with the comfortable and immersive feel of a two-eyed view.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre the BT-120mm ED binoculars suitable for viewing Jupiter's moons and cloud bands?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. When paired with higher-magnification eyepieces, the apochromatic 120mm objectives have the resolving power to clearly show Jupiter's four Galilean moons. You will also be able to discern the primary cloud bands, such as the North and South Equatorial Belts, and potentially the Great Red Spot, depending on atmospheric conditions.\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\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e120mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eBinocular Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Type\u003c\/td\u003e\n\u003ctd\u003eExtra-Low Dispersion (ED)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEyepiece Format\u003c\/td\u003e\n\u003ctd\u003e1.25\" (Interchangeable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e811803036932\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\u003ca href=\"https:\/\/davidastro.com\/pages\/explore-scientific-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eExplore Scientific Warranty\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":52909232259357,"sku":"ES-01-14250","price":7770.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-BT-120mm-ED-Giant-Binocular-1_e7e3c6e0-10f5-4cb6-b294-824a5d327a29.jpg?v=1789060824"},{"product_id":"explore-scientific-01-14240","title":"Explore Scientific BT 82mm ED Giant Binocular","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDual 82mm Extra-Low Dispersion (ED) Objective Lenses\u003c\/li\u003e\n\u003cli\u003eReduces Chromatic Aberration for Color-True Images\u003c\/li\u003e\n\u003cli\u003eAccepts Standard 1.25\" Interchangeable Eyepieces\u003c\/li\u003e\n\u003cli\u003eIncludes Two Explore Scientific 62° 20mm Waterproof Eyepieces\u003c\/li\u003e\n\u003cli\u003eDesigned for Astronomical and Terrestrial Viewing\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\u003eExplore Scientific BT 82mm ED Giant Binocular\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific BT 82mm ED Giant Binocular uses dual 82mm Extra-Low Dispersion (ED) objective lenses to deliver high-contrast, color-pure views free of chromatic aberration. These binoculars come ready for observation with a pair of included 20mm eyepieces that provide a wide 62° apparent field of view, creating an immersive, two-eyed perspective on the cosmos and distant landscapes.\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\u003e82mm ED Objectives: High-Contrast, Color-Pure Views\u003c\/h3\u003e\n\u003cp\u003eThe optical core of the BT 82mm ED is its pair of 82mm air-spaced triplet objectives featuring premium ED glass. This design gathers significant light for bright views of nebulae and galaxies while virtually eliminating chromatic aberration, or \"color fringing.\" When observing the limb of the Moon, bright planets, or high-contrast terrestrial subjects, you see sharp, well-defined edges without the distracting purple or blue halos common in standard achromatic binoculars.\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\u003eThe Included 20mm 62° Eyepiece Pair\u003c\/h3\u003e\n\u003cp\u003eYour first view is ready out of the box with the included pair of Explore Scientific 62° Series 20mm Waterproof Eyepieces. These eyepieces provide a wide, comfortable field of view perfect for sweeping the Milky Way or taking in broad landscapes. Because the BT 82mm ED uses standard 1.25\" helical focusers, you can easily swap in other eyepiece pairs to change magnification for more detailed views of planetary surfaces or tight double stars.\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 Solid Foundation: Mounting the 82mm Binoculars\u003c\/h3\u003e\n\u003cp\u003eDue to their size and power, the BT 82mm ED binoculars are designed exclusively for mount-based observing; they are not intended for handheld use. A stable platform is essential to achieving the steady, high-resolution views these optics are capable of producing. Pairing them with a dedicated U-mount and tripod (sold separately) allows for smooth, comfortable scanning across the sky at any angle from the horizon to the zenith.\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\u003eBT 82mm ED vs. Standard Achromatic Binoculars: The ED Advantage\u003c\/h3\u003e\n\u003cp\u003eWhile standard achromatic binoculars offer a great entry into two-eyed astronomy, the ED glass in the BT 82mm ED provides a distinct visual upgrade. The difference is most apparent on high-contrast targets where optical precision is critical.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Achromat:\u003c\/strong\u003e Bright stars like Vega or Sirius often show a noticeable violet halo, and the edge of the Moon can appear soft with a fringe of false color. This lowers overall contrast and obscures fine detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBT 82mm ED:\u003c\/strong\u003e The same targets resolve to sharp, color-pure points of light. Lunar craters and mountains along the terminator snap into focus with crisp definition, revealing a level of detail that false color would otherwise mask.\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\"\u003eWhat is the main advantage of the Explore Scientific BT 82mm ED model?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe primary advantage is the use of \u003cstrong\u003eExtra-Low Dispersion (ED) glass\u003c\/strong\u003e in the 82mm objective lenses. This specialized glass significantly reduces chromatic aberration, resulting in sharper, higher-contrast, and more color-accurate views compared to standard achromatic binoculars, especially on bright objects like the Moon, planets, and stars.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of mount do I need for the BT 82mm ED Giant Binocular?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese binoculars require a sturdy mount and tripod for stable viewing. They are not designed to be handheld. A \u003cstrong\u003ebinocular U-mount\u003c\/strong\u003e, like the Explore Scientific U-Mount with Tripod, is the ideal solution as it provides smooth motion and allows you to aim the binoculars high into the sky without difficulty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use other eyepieces with the BT 82mm ED binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The BT 82mm ED features standard \u003cstrong\u003e1.25\" helical focusers\u003c\/strong\u003e, allowing you to use any pair of standard 1.25\" astronomical eyepieces. This lets you change the magnification for different targets, from low-power wide-field scanning to high-power views of planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow will the Moon look through the BT 82mm ED with the included 20mm eyepieces?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWith the included 20mm eyepieces, the Moon will appear incredibly sharp and detailed. The ED glass ensures the bright lunar limb is free of color fringing, providing a stark, high-contrast view. You will be able to resolve individual crater chains, mountain ranges, and subtle rilles with the immersive quality that only a two-eyed view can provide.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre the BT 82mm ED binoculars good for viewing deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The dual 82mm objectives gather a great deal of light, making them excellent for deep-sky objects. On the Orion Nebula (M42), you can expect to see the four stars of the Trapezium clearly resolved within the glowing nebulosity, with the binocular view providing a striking sense of depth and structure in the surrounding gas clouds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eAre these BT 82mm ED binoculars suitable for daytime terrestrial viewing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, they are outstanding for long-range terrestrial viewing. The superior color correction of the ED glass is a significant advantage in daylight, providing exceptionally crisp, vibrant, and high-contrast images of wildlife, ships at sea, or distant mountain scenery.\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\u003e811803036925\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\"\u003eBT 82mm ED Giant Binocular\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eExplore Scientific 62° 20mm Waterproof Eyepiece\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\u003cul class=\"DAV-grid\"\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":52909234749725,"sku":"ES-01-14240","price":4620.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-BT-82mm-ED-Giant-Binocular-1_37456e21-ef39-4cd7-9ade-ce64db53a79f.jpg?v=1789060834"},{"product_id":"explore-scientific-01-14230","title":"Explore Scientific BT-120 SF Large Binoculars","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eLarge-Aperture Binocular Telescope Design\u003c\/li\u003e\n\u003cli\u003eAngled Eyepiece Holders for Comfortable Viewing\u003c\/li\u003e\n\u003cli\u003eAccepts Standard 1.25\" Eyepieces\u003c\/li\u003e\n\u003cli\u003eNitrogen-Purged, Waterproof, and Fog-Proof\u003c\/li\u003e\n\u003cli\u003eRobust Magnesium Body Construction\u003c\/li\u003e\n\u003cli\u003eIndividual Helical Eyepiece Focusing\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\u003eExplore Scientific BT-120 SF Large Binoculars\u003c\/h2\u003e\n\u003cp\u003eThe Explore Scientific BT-120 SF Large Binoculars merge the light-gathering power of a dual refractor telescope with the comfort of two-eyed viewing, producing exceptionally bright and detailed images for both astronomy and terrestrial observation. These giant binoculars deliver an immersive, wide-field experience, revealing stunning detail on the Moon's craters, planets, and bright deep-sky objects. For terrestrial use, they bring distant landscapes and wildlife into sharp, clear focus.\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 Dual Refractor System for Bright, Immersive Views\u003c\/h3\u003e\n\u003cp\u003eBy using two large objective lenses—one for each eye—the BT-120 SF creates a three-dimensional effect that a single telescope cannot replicate. This design enhances contrast and makes faint details easier to perceive. All optical surfaces feature professional-grade coatings to maximize light transmission, resulting in bright, vivid images with high contrast from edge to edge.\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\u003eEngineered for Fatigue-Free Observation Sessions\u003c\/h3\u003e\n\u003cp\u003eUnlike straight-through binoculars that force you to crane your neck, the BT-120 SF features angled eyepiece holders for comfortable, sustained viewing, whether you're scanning the zenith or a distant horizon. Each eyepiece focuses independently with a smooth, precise helical mechanism, allowing you to achieve perfect focus for your individual eyes. The design incorporates generous eye relief and soft eyecups, ensuring comfort during long sessions.\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\u003eRobust, All-Weather Magnesium Construction\u003c\/h3\u003e\n\u003cp\u003eThe BT-120 SF is built to withstand the rigors of field use in any environment. The main body is constructed from a robust magnesium housing that is both strong and lightweight. The optical barrels are sealed and purged with inert nitrogen gas, which prevents internal fogging and makes the binoculars fully waterproof, protecting the internal optics from humidity, dew, and rain.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtendable Dew Caps:\u003c\/strong\u003e Integrated dew shields slide forward to prevent condensation from forming on the objective lenses during cool, damp nights and block stray light.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentral Carrying Handle:\u003c\/strong\u003e A sturdy handle provides a secure grip for transport and simplifies the process of mounting the heavy binoculars onto a tripod head.\u003c\/li\u003e\n\u003c\/ul\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 Flexible System with Interchangeable 1.25\" Eyepieces and Filter Compatibility\u003c\/h3\u003e\n\u003cp\u003eA key feature of the BT-120 SF is its ability to accept standard 1.25\" astronomical eyepieces. This allows you to change magnification by swapping eyepiece sets, tailoring the view to your target. The eyepieces are held securely by precise brass compression ring clamps that ensure perfect alignment without marring the eyepiece barrels. The 1.25\" format also means you can use standard color and nebula filters to enhance your astronomical observations.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Requirement:\u003c\/strong\u003e Due to their size and weight, these binoculars require a substantial mount. For optimal stability and smooth motion, the optional Explore Scientific U-Mount with a compatible field tripod is highly recommended.\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\"\u003eWhat makes the Explore Scientific BT-120 SF different from standard binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe BT-120 SF is a binocular telescope. Unlike standard binoculars, it features very large objective lenses for superior light gathering, and crucially, it allows you to use interchangeable \u003cstrong\u003e1.25\" astronomical eyepieces\u003c\/strong\u003e. This provides the flexibility to change magnification, a feature typically reserved for telescopes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use my existing 1.25\" telescope eyepieces with the BT-120 SF?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The BT-120 SF is designed to be compatible with most standard 1.25\" eyepieces. This allows you to leverage your existing eyepiece collection to achieve a wide range of magnifications for viewing everything from wide star fields to fine planetary detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the BT-120 SF suitable for terrestrial viewing like birdwatching?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The immense light-gathering ability and high-resolution optics make the BT-120 SF exceptional for long-distance terrestrial observation. The angled eyepieces provide a comfortable viewing posture for observing wildlife, landscapes, or maritime traffic for extended periods.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would lunar craters appear in the BT-120 SF binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eViewing the Moon through the BT-120 SF is a truly immersive experience. The two-eyed view creates a distinct 3D-like effect, making craters and mountain ranges along the terminator appear to have more depth and relief than in a conventional single-eyepiece telescope. The view is bright, sharp, and incredibly detailed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat kind of tripod is required for the Explore Scientific BT-120 SF?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThese are large, heavy instruments and require a very sturdy support system. A standard photographic tripod is insufficient. An astronomical-grade tripod paired with a specialized mount, such as the \u003cstrong\u003eExplore Scientific U-Mount\u003c\/strong\u003e, is recommended to ensure stability and provide smooth, controllable movements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the BT-120 SF perform on bright deep-sky objects like the Orion Nebula (M42)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eOn objects like the Orion Nebula (M42) or the Andromeda Galaxy (M31), the BT-120 SF's large twin apertures gather a great deal of light, resulting in a bright, high-contrast image. The binocular view often makes it easier to perceive faint, extended nebulosity and structure compared to viewing with a single eye.\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\u003e00811803033955\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\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":52909235962141,"sku":"ES-01-14230","price":3500.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-BT-120-SF-Large-Binoculars-with-62-Degree-LER-Eyepieces-1_9b7b614d-34af-470a-a6ac-312801358c32.jpg?v=1789060847"},{"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"},{"product_id":"explore-scientific-01-14310","title":"Explore Scientific U-Mount and Tripod for BT 150","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for the Explore Scientific BT 150 Binoculars\u003c\/li\u003e\n\u003cli\u003e12 kg (26.5 lb) Payload Capacity\u003c\/li\u003e\n\u003cli\u003eAccommodates Binoculars up to 290 mm Wide\u003c\/li\u003e\n\u003cli\u003eAdjustable Tripod Height: 100 cm to 140 cm\u003c\/li\u003e\n\u003cli\u003eInfinitely Adjustable Friction Controls\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\u003eExplore Scientific U-Mount and Tripod for BT 150\u003c\/h2\u003e\n\u003cp\u003ePurpose-built for the massive Explore Scientific BT 150 Giant Binoculars, this U-Mount and Tripod system provides the strength to manage a 12 kg (26.5 lb) payload and binoculars up to 290 mm wide. The heavy-duty stainless steel tripod adjusts from 100 cm to 140 cm, delivering the rigidity and smooth motion essential for comfortable, high-magnification astronomical viewing.\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\u003eU-Mount Head: 12 kg Capacity with Smooth Friction Control\u003c\/h3\u003e\n\u003cp\u003eWhen using dual 150mm optical systems like those on the BT 150, a conventional mount lacks the necessary strength. This U-Mount is engineered to securely support up to 12 kg (26.5 lb) and a width of 290 mm, providing a stable platform that eliminates flexure and vibration. Infinitely adjustable friction controls on both the altitude and azimuth axes allow you to perfectly balance your instrument for smooth, controlled tracking across the sky.\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\u003eStainless Steel Tripod: 100 cm to 140 cm Adjustable Stability\u003c\/h3\u003e\n\u003cp\u003eThe included heavy-duty tripod features stainless steel legs that dampen vibrations for sharper, steadier views, especially at high power. Its height can be adjusted from approximately 100 cm to 140 cm (39.4–55.1 in.), offering comfortable viewing angles whether you prefer to observe while seated or standing. An integrated aluminum accessory tray keeps your eyepieces and other small items organized and within easy reach during your sessions.\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 U-Mount necessary for the BT 150 binoculars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Explore Scientific BT 150 binoculars are exceptionally large and heavy. This U-Mount is specifically designed to handle their 12 kg (26.5 lb) weight and 290 mm width, providing a level of stability and smooth motion that standard binocular or photo tripods cannot achieve. This ensures your views are steady and tracking is effortless.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the U-Mount and Tripod perform when observing the Moon's terminator with the BT 150?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eIt performs exceptionally well. The combination of the heavy-duty stainless steel tripod, which minimizes vibrations, and the U-Mount's smooth friction controls allows you to make precise, minute adjustments without introducing jitter. This is critical for cleanly resolving fine details in lunar craters and mountains along the terminator at high magnification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the benefit of the adjustable friction controls on the U-Mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe infinitely adjustable friction controls let you customize the tension on both the altitude (up\/down) and azimuth (left\/right) axes. You can set a light tension for smoothly sweeping across the Milky Way or increase it to hold the heavy binoculars firmly on a specific target, like Jupiter or a faint nebula, without drift.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the tripod stable enough for observing from a wooden deck with the BT 150?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The heavy-duty stainless steel construction of the tripod is designed to absorb and dampen vibrations far more effectively than aluminum tripods. While any movement on the deck can still be a factor, this tripod provides the mass and rigidity needed to minimize shake and deliver the most stable views possible on such a surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the height range of the U-Mount and Tripod?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe tripod's height is adjustable from approximately 100 cm to 140 cm (39.4 to 55.1 inches). This versatile range accommodates most users, allowing for comfortable observing sessions whether you are standing up or seated in an observing chair.\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 U-Mount with binoculars other than the BT 150?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. While purpose-built for the BT 150, the mount is an excellent choice for any large astronomical binoculars that weigh up to 12 kg (26.5 lb) and have a body width of no more than 290 mm (11.4 in.).\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\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e12 kg (26.5 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Binocular Width\u003c\/td\u003e\n\u003ctd\u003e290 mm (11.4 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod Material\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod Height Range\u003c\/td\u003e\n\u003ctd\u003e100 cm to 140 cm (39.4 in. to 55.1 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Controls\u003c\/td\u003e\n\u003ctd\u003eInfinitely adjustable friction on altitude and azimuth axes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccessory Tray\u003c\/td\u003e\n\u003ctd\u003eIntegrated aluminum tray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN\u003c\/td\u003e\n\u003ctd\u003e811803036956\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\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\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":52909239501085,"sku":"ES-01-14310","price":1540.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/ExploreScientific-U-Mount-and-Tripod-for-BT-150-1_49723cae-a37a-4bcf-a782-e02eb70b8d3c.jpg?v=1789060870"}],"url":"https:\/\/davidastro.com\/en-us\/collections\/explore-scientific-bt-giant-binoculars.oembed","provider":"David Astro","version":"1.0","type":"link"}