• 01-14210
  • 01-14210
  • 01-14210
  • 01-14210
  • 01-14210
  • 01-14210
  • 01-14210
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Explore Scientific

Explore Scientific BT-82 SF Giant Binoculars 82 mm with 2× 20 mm LER Eyepieces (01‑14210)

Explore Scientific BT-82 SF Giant Binoculars 82 mm with 2× 20 mm LER Eyepieces (01‑14210)

$1,799.99
$1,799.99
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The Explore Scientific BT-82 SF Giant Binoculars combine powerful optics, rugged construction, and comfortable ergonomics — perfect for astronomy, wildlife watching, or long-range terrestrial observation. With large 82 mm objective lenses and a 470 mm focal length, these binoculars deliver bright, high-contrast images of the Moon, planets, deep-sky objects, and distant landscapes.

Each eye has a complete optical system built in, giving true “binocular-telescope” performance: rich light-gathering, wide field of view, and immersive depth perception. The kit includes two premium 62° LER 20 mm eyepieces (~24× magnification), and the eyepiece holders accept any standard 1.25" eyepieces — giving you flexibility to customize magnification or use filters.

The sturdy magnesium housing is waterproof, nitrogen-filled, and sealed to resist fogging and internal moisture — ideal for use in humid or cold conditions. The included 45° angled viewing, extendable dew caps, and built-in carrying handle enhance comfort and portability. The binoculars also offer a tripod mount option, making them stable for long sessions or astrophotography.

Whether you’re exploring the night sky, scanning for wildlife, or observing distant landscapes, the BT-82 SF delivers impressive brightness, detail, and comfort — all in a rugged, versatile package.

Key Features

  • 82 mm objective lenses with 470 mm focal length — strong light gathering for celestial and terrestrial viewing

  • Includes two 62° 20 mm LER eyepieces (~24× magnification, 2.6° field of view)

  • Accepts all standard 1.25" eyepieces — customizable magnification or use of filters

  • Rugged, waterproof magnesium housing — nitrogen-filled and sealed against fog and moisture

  • Comfortable 45° viewing angle, extendable dew caps, and a carrying handle — ideal for long sessions and portability

  • Tripod mount-compatible — stable setup for night sky observation or steady terrestrial viewing

Specifications

Specification Detail
Brand Explore Scientific
Model / SKU 01‑14210 (BT-82 SF)
Optical Design Achromatic refractor, Porro prism
Objective Lens Diameter 82 mm
Focal Length 470 mm
Focal Ratio f/5.7
Supplied Eyepieces 2 × 20 mm 62° LER
Magnification (with 20 mm eyepieces) 24×
Apparent Field of View 62°
Real Field of View ~2.6°
Exit Pupil 3.5 mm
Eye Relief 15 mm
Interpupillary Distance 54–76 mm adjustable
Prism / Glass Coating Enhanced multilayer (“EMD”) coatings
Waterproof / Fogproof Yes — nitrogen-filled, sealed housing
Eyepiece Holder 1.25" (31.7 mm) — accepts standard eyepieces/filters
Tripod Mount Yes — 2 × 1/4" or 1 × 3/8" thread
Dimensions (L × W × H) 445 × 226 × 122 mm
Weight ~4.3 kg
Recommended Uses Astronomy (Moon, planets, DSOs), terrestrial, wildlife, long-distance viewing
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Frequently Asked Questions

With a beginner telescope you can see a surprising amount — the craters and mountains on the Moon, the rings of Saturn, the moons of Jupiter, and star clusters like the Pleiades. As you get more comfortable, you can also spot nebulae and distant galaxies. Not sure which beginner telescope is right for you? Check out our Telescope Buying Guide.
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All telescopes on Telescope Wolves are hand-picked with beginners in mind. If you're unsure which telescope is right for you, check out our Telescope Buying Guide.
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