{"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":9999.99,"currency_code":"USD","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","url":"https:\/\/davidastro.com\/en-us\/products\/explore-scientific-01-14260","provider":"David Astro","version":"1.0","type":"link"}