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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Explore Scientific BT 82mm ED Giant Binocular
Explore Scientific BT 82mm ED Giant Binocular
Explore Scientific BT 82mm ED Giant Binocular
Explore Scientific BT 82mm ED Giant Binocular

Explore Scientific BT 82mm ED Giant Binocular

by Explore Scientific
SKU ES-01-14240
$3,299.99 - $3,299.99
$3,299.99
$3,299.99 - $3,299.99
$3,299.99
Price Match Policy!
  • Dual 82mm Extra-Low Dispersion (ED) Objective Lenses
  • Reduces Chromatic Aberration for Color-True Images
  • Accepts Standard 1.25" Interchangeable Eyepieces
  • Includes Two Explore Scientific 62° 20mm Waterproof Eyepieces
  • Designed for Astronomical and Terrestrial Viewing
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  • Description
  • FAQ
  • Specifications
  • In the Box
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  • Warranty

  • Explore Scientific BT 82mm ED Giant Binocular

    The 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.

    82mm ED Objectives: High-Contrast, Color-Pure Views

    The 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.

    The Included 20mm 62° Eyepiece Pair

    Your 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.

    A Solid Foundation: Mounting the 82mm Binoculars

    Due 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.

    BT 82mm ED vs. Standard Achromatic Binoculars: The ED Advantage

    While 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.

    • Standard Achromat: 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.
    • BT 82mm ED: 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.

  • What is the main advantage of the Explore Scientific BT 82mm ED model?

    The primary advantage is the use of Extra-Low Dispersion (ED) glass 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.

    What kind of mount do I need for the BT 82mm ED Giant Binocular?

    These binoculars require a sturdy mount and tripod for stable viewing. They are not designed to be handheld. A binocular U-mount, 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.

    Can I use other eyepieces with the BT 82mm ED binoculars?

    Yes. The BT 82mm ED features standard 1.25" helical focusers, 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.

    How will the Moon look through the BT 82mm ED with the included 20mm eyepieces?

    With 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.

    Are the BT 82mm ED binoculars good for viewing deep-sky objects like the Orion Nebula (M42)?

    Absolutely. 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.

    Are these BT 82mm ED binoculars suitable for daytime terrestrial viewing?

    Yes, 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.

  • GTIN 811803036925

    • BT 82mm ED Giant Binocular

      × 1

    • Explore Scientific 62° 20mm Waterproof Eyepiece

      × 2

  • Explore Scientific Warranty