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Giant Binoculars

Giant Binoculars

Observatory aperture, no setup

Explore Scientific BT series from 70mm to 150mm ED, plus the U-mounts and tripods that hold them steady. Every one needs a mount — we will match it.

5Binoculars
70–150mmAperture
$749.99From
Giant Binoculars

Two Eyes Beat One, at Any Aperture

Almost everything you know about observing assumes one eye at an eyepiece. Spend an evening behind a pair of 82mm binoculars and the difference is immediate: the field feels three-dimensional, faint detail resolves more readily, and you can stay at it for hours without the eye strain a monocular view produces.

These are Explore Scientific's BT series, from the 70mm SF up to the 150mm ED — instruments with the aperture of a serious telescope and none of the setup. Sweeping the Milky Way through a pair of these is an experience a telescope genuinely cannot reproduce.

They are not handheld. Every model here needs a mount, which is why the U-mounts and tripods are on this page too.

Explore Scientific BT-150 ED giant binocular
1

ED glass where it counts

The 82mm, 120mm and 150mm ED models use extra-low dispersion glass to control the colour fringing large binoculars are prone to.

2

Mount included in the thinking

We will not sell you a 120mm binocular without checking you have something that will hold it steady.

3

Both eyes, all night

Binocular vision is less tiring and resolves faint detail more readily than a single eyepiece.

4

Free shipping on all of it

Every binocular and mount on this page ships free within the United States.

Every giant binocular we stock

Five binoculars and two mount and tripod sets.

Binoculars

Explore Scientific BT-150 ED Giant Binocular
Explore Scientific

Explore Scientific BT-150 ED Giant Binocular

150mm ED. The largest in the range, and a genuinely observatory-class instrument.

$9,999.99
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Explore Scientific BT-120 ED Giant Binocular
Explore Scientific

Explore Scientific BT-120 ED Giant Binocular

120mm ED. Deep-sky aperture with extra-low dispersion glass.

$5,549.99
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Explore Scientific BT-82 ED Giant Binocular
Explore Scientific

Explore Scientific BT-82 ED Giant Binocular

82mm ED. The sweet spot for portability against aperture.

$3,299.99
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Explore Scientific BT-120 SF Giant Binocular
Explore Scientific

Explore Scientific BT-120 SF Giant Binocular

120mm SF. Large aperture at a lower entry point than the ED.

$2,499.99
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Explore Scientific BT-70 SF Giant Binocular
Explore Scientific

Explore Scientific BT-70 SF Giant Binocular

70mm SF. The most approachable way into giant binocular observing.

$1,699.99
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Mounts and tripods

Explore Scientific U-Mount and Tripod for BT-150 Giant Binocular
Explore Scientific

Explore Scientific U-Mount and Tripod for BT-150 Giant Binocular

U-mount and tripod rated for the BT-150.

$1,099.99
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Explore Scientific U-Mount with ST3 Tripod for Giant Binoculars
Explore Scientific

Explore Scientific U-Mount with ST3 Tripod for Giant Binoculars

U-mount on the two-inch ST3 tripod for the smaller BT models.

$749.99
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Giant binocular questions, answered

What people ask before their first pair.

Can I hold these?

No. The smallest here is 70mm and weighs enough that hand-holding gives you a shaking view within seconds. Every model on this page needs a mount, and the U-mount and tripod sets here are matched to them.

What do giant binoculars show that a telescope does not?

Wide, bright, low-power sweeping with both eyes. Open clusters, large nebulae, the Milky Way, comets and the Moon are all better in binoculars than in a long-focal-length telescope. For planets and small faint galaxies, a telescope wins.

Is ED glass worth the difference?

On the larger apertures, yes. A big fast objective without ED glass shows a violet fringe on bright targets. If most of your observing is the Moon, planets and bright stars, the ED models are noticeably cleaner.

Do they focus independently?

Yes. These use individual eyepiece focusing, so you set each side for your own eyes once and then leave it, which also accommodates a difference in prescription between your two eyes.

Where to go next

Binoculars are one way to observe. These are the others.

Telescopes

34 models, all types

Mounts & Stands

8 mounts and tripods

Solar Filters

9 Lunt filters and etalons

Focusers

Rack-and-pinion and helical

Cases, Covers & Shrouds

5 cases, soft and hard

Mounting Hardware

Clamshells, dovetails, adapters

Observation Accessories

Binoviewers, diagonals, finders

Power & Cables

Field power and controllers