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Explore Scientific BT-82 SF 82mm Waterproof Porro Prism Large Binocular with 62 Degree LER Eyepieces

SKU: ES0114210 MFR: 01-14210
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Key Features

  • Enjoy bright, clear views with these 82mm large binoculars, perfect for astronomy.
  • Waterproof binoculars featuring enhanced multi-layer deposition for crisp images.
  • Experience a wide 2.6° field of view, ideal for birdwatching and nature observation.
  • Durable magnesium housing ensures these porro prism binoculars can withstand tough conditions.
  • Achieve optimal clarity with the achromatic refractor design and quality lens.
  • Comfortable 15mm eye relief makes these Explore Scientific binoculars great for long sessions.
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Special Order?Estimated to Ship: 10/20/2025
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Explore Scientific BT-82 SF Specifications

  • Optical Design

    Achromatic refractor Porro

  • Housing Material

    Magnesium

  • Mirror / Lens Diameter

    82 mm

  • Focal Length

    470 mm

  • Focal Ratio

    5.7

  • Apparent Facial Field

    62 degrees

  • Type of Remuneration

    Enhanced Multilayer Desposition (EMD)

  • Exit Pupil min.

    3.5 mm

  • Field of View

    2.6 degrees

  • Waterproof

    Yes

  • Water Resistance Protection Level

    IPX6

  • Exit Pupil Distance

    15 mm

  • Dimensions

    17.5 x 8.8 x 4.8" (445 x 226 x 122mm)

  • Weight

    9.47 lbs (4.3kg)

  • UPC Code

    811803033924

2 Accessories for Explore Scientific BT-82 SF 82mm Waterproof Porro Prism Large Binocular with 62 Degree LER Eyepieces

  • All Accessories (2)
  • Cleaning Accessories (1)
  • Brackets & Mounts (1)

About Explore Scientific BT-82 SF

From the majestic expanse of the night sky to the intricate details of distant landscapes, the BT-82 SF 82mm Waterproof Porro Prism Large Binoculars from Explore Scientific offer an unparalleled viewing experience for both amateur astronomers and outdoor enthusiasts. These durable and reliable binoculars are designed to bring the cosmos and nature's wonders into sharp, brilliant focus, allowing you to observe celestial bodies like globular star clusters, gas nebulae, and planets with exceptional clarity.

Crafted with high-quality, large 82mm objective lenses, these stylish binoculars excel in low-light conditions, gathering ample light to produce bright images even during twilight hours. The innovative 62-degree Long Eye Relief (LER) eyepieces not only provide a wide field of view but also ensure a comfortable viewing experience, reducing eye strain and allowing for extended periods of observation.

The BT-82 SF binoculars boast a professional coating on all lens surfaces, enhancing image quality and ensuring that each view is vivid and full of contrast. The ergonomic 45-degree viewing angle facilitates fatigue-free use, even when the binoculars are angled steeply, making them ideal for stargazing or surveying the horizon.

Constructed with a robust magnesium housing, these binoculars are both lightweight and sturdy, capable of withstanding the rigors of outdoor use. The IPX6 sealing and nitrogen-filled interior prevent internal fogging in challenging weather conditions, ensuring that your view remains clear and unobstructed.

Included with the binoculars are two Explore Scientific 20mm eyepieces from the acclaimed 62-degree LER series, delivering a 24x magnification and a broad 2.6-degree field of view. The eyepieces feature a generous 15mm interpupillary distance and soft silicone eyecups for added comfort.

For those seeking customization, the binoculars accommodate interchangeable eyepieces with a 1.25-inch / 31.7mm plug-in diameter, allowing you to adjust magnification and field of view according to your preferences. The precision brass compression ring clamp secures the eyepieces in place, ensuring a stable and tilt-free viewing experience.

Enhance your astronomical observations by attaching color and nebula filters directly to the eyepiece sleeves, increasing contrast and detail visibility. The comfortable 45-degree view and helical single focus make it easy to achieve precise focusing, while the extendable dew caps prevent fogging and block extraneous light.

Transportation and setup are made effortless with the integrated carrying handle, strategically placed at the binoculars' center of gravity. For optimal stability, a sturdy photo tripod is recommended, and the binoculars can be attached via standard photo tripod threads. The optional Explore Scientific U-Mount with field tripod is the perfect companion for these large binoculars, providing a secure and vibration-free platform for high-magnification observations.

In summary, the BT-82 SF 82mm Waterproof Porro Prism Large Binoculars with 62 Degree LER Eyepieces are a testament to Explore Scientific's commitment to innovation and quality, offering a remarkable tool for anyone passionate about exploring the beauty of the skies and the earth.

Explore Scientific BT-82 SF Features

  • Powerful large binoculars with a 82 mm objective diameter and 480 mm focal length
  • Observe the moon, the planets and bright deep sky objects in the night sky as well as terrestrial targets
  • Extremely robust binoculars, sealed and filled with nitrogen
  • Convenient 45-degree view and individual focusing
  • Carrying handle makes it easier to transport the binocular and ensures a secure hold during tripod assembly
  • Includes two premium waterproof Explore Scientific 62 degree 20mm LER eyepieces
  • Eyepiece holder 1.25 inch / 31.7mm, interchangeable eyepieces
  • Extendable dew caps minimize condensation on the lenses
  • Tripod connection: 2 x 1/4 inch and 1 x 3/8 inch photo thread

Key Features

  • Enjoy bright, clear views with these 82mm large binoculars, perfect for astronomy.
  • Waterproof binoculars featuring enhanced multi-layer deposition for crisp images.
  • Experience a wide 2.6° field of view, ideal for birdwatching and nature observation.
  • Durable magnesium housing ensures these porro prism binoculars can withstand tough conditions.
  • Achieve optimal clarity with the achromatic refractor design and quality lens.
  • Comfortable 15mm eye relief makes these Explore Scientific binoculars great for long sessions.

What's in the box:

  • Explore Scientific BT-82 SF 82mm Waterproof Porro Prism Large Binocular
  • 2x 62 degree LER Eyepieces
  • Manual
  • Explore Scientific 1 Year Limited Warranty (Lifetime Limited Warranty with Registration)