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Explore Scientific

Explore Scientific BT-70 SF Giant Binocular — 70mm Astronomy Binocular with 62° LER Eyepieces

Explore Scientific BT-70 SF Giant Binocular — 70mm Astronomy Binocular with 62° LER Eyepieces

Regular price $1,299.00
Regular price $1,699.99 Sale price $1,299.00
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The Explore Scientific BT-70 SF Giant Binocular is a 70mm astronomy binocular built for comfortable, immersive two-eyed stargazing. Its angled eyepieces make long sessions relaxing even when objects sit high overhead, and it ships with a pair of premium 62° 20mm long-eye-relief (LER) eyepieces for bright, wide views of the Moon, star clusters, and Milky Way star fields. The two 1.25" eyepiece holders accept standard interchangeable eyepieces, so you can change magnification as you like.

Who it's for

Beginner and intermediate stargazers who want more light-gathering and comfort than a handheld pair of binoculars, with the natural depth of two-eyed viewing. New to the hobby? See our Astronomy 101 stargazing guide.

Key features

  • 70mm objectives for bright, wide-field two-eyed views
  • Angled eyepieces for comfortable observing overhead
  • Includes two 62° 20mm LER eyepieces for wide, comfortable views
  • Interchangeable 1.25" eyepiece holders — change magnification with standard eyepieces
  • Individual eyepiece focusing and adjustable interpupillary distance
  • Tripod-mountable for steady, shake-free scanning

Specifications

Type SF giant astronomy binocular
Aperture 70 mm
Included eyepieces Two 62° 20mm LER (1.25")
Eyepiece holders Interchangeable 1.25"
Viewing Angled eyepieces
Mount Tripod-mountable
SKU 01-14200

Frequently asked questions

Can I change the magnification?
Yes. The BT-70 accepts interchangeable 1.25" eyepieces, so you can swap in different eyepieces to change magnification. It comes with two 62° 20mm LER eyepieces to start.

Do I need a tripod?
For steady, comfortable views at this aperture, a sturdy tripod or mount is strongly recommended.

Why choose giant astronomy binoculars over a telescope?
Two-eyed viewing gives brighter, more natural, more immersive wide-field views — ideal for scanning star fields, clusters, and the Milky Way.

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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.
Most orders ship within 5 business days. You'll receive tracking information within 24 hours of your order leaving the warehouse. For full details, visit our Shipping Policy.
Orders cancelled after 48 hours are subject to a $20 administration fee. If your order has shipped, you are responsible for return shipping costs. Refunds are issued to the original payment method. See our full Refund Policy for details.
Yes! If you find a lower price at another authorized online retailer within 6 months of your purchase, we'll refund the difference. Learn more on our Price Match Guarantee page.
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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