BT 120mm ED Giant Binocular
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BT 120mm ED Giant Binocular
Description
The Explore Scientific BT 120mm ED Giant Binocular is built for serious astronomers who want the most immersive, two-eyed observing experience possible. Massive 120mm objective lenses paired with premium Extra-Low Dispersion (ED) glass deliver breathtaking views of the night sky - bright, sharp, and rich with detail. The large aperture gathers an abundance of light, pulling out faint stars, intricate nebulae, sweeping star fields, and distant galaxies that smaller optics simply can't match.
ED glass technology aggressively reduces chromatic aberration and false color, resulting in cleaner edges, superior contrast, and natural color reproduction - even at higher magnifications. The BT 120mm comes ready to use with a pair of 62° 20mm Waterproof Eyepieces and accepts standard 1.25-inch interchangeable eyepieces, so you can tailor the magnification and field of view for any target - from wide-field Milky Way sweeps to detailed lunar and planetary sessions.
Key Features
- 120mm ED Objective Lenses: Massive 120mm aperture lenses with Extra-Low Dispersion glass deliver exceptional light-gathering power with high contrast and outstanding color correction.
- Reduced Chromatic Aberration: Premium ED glass significantly minimizes false color and chromatic aberration around bright objects, producing cleaner, crisper images.
- Immersive Two-Eyed Observing: Giant binocular design provides a natural, relaxed viewing experience that makes long observing sessions more comfortable and engaging than single-eye telescopes.
- Interchangeable 1.25-Inch Eyepiece System: Accepts standard 1.25-inch eyepieces, allowing flexible magnification choices for deep-sky, lunar, planetary, and terrestrial targets.
- Included 62° 20mm Waterproof Eyepieces: Ships with a matched pair of Explore Scientific 62° 20mm Waterproof Eyepieces for a wide, comfortable field of view right out of the box.
- Built for Mounted Use: Designed for use with a heavy-duty mount - pairs optimally with the Explore Scientific U-Mount and Tripod for smooth, stable movement during extended sessions.
- Astronomical and Terrestrial Use: Performs brilliantly on star clusters, nebulae, galaxies, and open clusters, as well as daytime terrestrial subjects.
- Limited Warranty: Backed by the Explore Scientific limited warranty for peace of mind on your investment.
- Brand: Explore Scientific - a trusted name in premium optical instruments for amateur and serious astronomers.
What's Included
- Explore Scientific BT 120mm ED Giant Binocular
- Pair of Explore Scientific 62° 20mm Waterproof Eyepieces
Why You'll Love It
The BT 120mm ED Giant Binocular is a showpiece instrument that transforms every observing session into an unforgettable experience. The combination of 120mm aperture and ED glass optics means you're getting professional-grade optical performance in a binocular format - revealing detail and depth that will genuinely surprise even experienced observers. Two-eyed viewing is more immersive, more comfortable, and more natural than squinting through a single eyepiece, making it ideal for extended star parties or quiet nights in the backyard.
Explore Scientific has built a well-earned reputation among astronomers worldwide for optical quality and engineering precision, and the BT 120mm reflects that commitment at every level. Whether you're a dedicated deep-sky observer, a lunar enthusiast, or someone who wants the finest binocular views the hobby has to offer, this instrument is engineered to deliver years of rewarding, dependable use. It's an investment in the night sky that will pay off every clear night for years to come.
Product Specifications
View Product Specs
| Brand | Explore Scientific |
|---|---|
| Objective Lens Diameter | 120mm |
| Glass Type | Extra-Low Dispersion (ED) |
| Included Eyepieces | Pair of Explore Scientific 62° 20mm Waterproof Eyepieces |
| Eyepiece Compatibility | Standard 1.25-inch interchangeable eyepieces |
| Intended Use | Astronomical and terrestrial observing |
| Mount Requirement | Requires heavy-duty mount (Explore Scientific U-Mount and Tripod recommended, sold separately) |
| SKU | 01-14250 |
| Warranty | Explore Scientific Limited Warranty (register within 60 days) |
FAQ
Is the tripod and U-Mount included with the BT 120mm ED?
No, the Explore Scientific U-Mount and Tripod shown in product images are not included with the binocular. Due to the size and weight of the BT 120mm ED, a heavy-duty mount is essential for stable, comfortable observing. We strongly recommend pairing this binocular with the Explore Scientific U-Mount and Tripod, which are available separately.
Can I use my own eyepieces with the BT 120mm ED?
Yes! The BT 120mm ED accepts standard 1.25-inch interchangeable eyepieces, so you can swap in your preferred eyepieces to adjust magnification and field of view. It comes ready to observe with a matched pair of Explore Scientific 62° 20mm Waterproof Eyepieces, but the flexibility to upgrade or change eyepieces is a key advantage of this system.
Can the BT 120mm ED be used for daytime terrestrial viewing?
Yes, while the BT 120mm ED is primarily designed for astronomical use, its large aperture and ED glass optics also make it an outstanding instrument for terrestrial observing - wildlife, landscapes, and distant scenery all benefit from its light-gathering power and sharp, color-accurate views.
What is the advantage of ED glass in a giant binocular?
Extra-Low Dispersion (ED) glass greatly reduces chromatic aberration - the color fringing that can appear around bright, high-contrast objects like stars or the lunar limb. The result is noticeably sharper, cleaner images with more accurate color reproduction and better contrast, especially at higher magnifications. For serious astronomical observing, ED glass is a significant upgrade over standard optical glass.
What kind of objects can I observe with the BT 120mm ED?
The 120mm aperture and ED optics make this binocular exceptional for a wide range of astronomical targets - star clusters, nebulae, galaxies, open clusters, the Moon, and rich Milky Way star fields all benefit from the light-gathering power and optical quality of this instrument. Its two-eyed viewing format makes sweeping large areas of sky particularly immersive and enjoyable.
What warranty coverage does the BT 120mm ED come with?
The BT 120mm ED is backed by the Explore Scientific limited warranty. To activate full warranty coverage, you must register your product within 60 days of purchase. For full details on what is covered, please refer to the Explore Scientific Warranty Policy.
Thank you for trusting us with your order! This product is shipped directly from the manufacturing warehouse to get to customers all over the U.S. as soon as possible!
While many of our products are prepared and shipped out within 48 hours, some of our items are built to order or require custom pieces that could take 2-6 weeks to prepare before shipping! Please contact us at 888-884-2234 for a delivery ETA if you have a strict timeline.
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Omaha Sports & Games Team
Returns & Refunds Policy
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at service@omahasportsandgames.com.
If your return request is accepted, it will be up to you as the buyer to return the item in its original packaging, unworn and unused. You as the buyer will be responsible for paying the return shipping. We may be able to assist you in scheduling a pickup for return but the payment will still be your responsibility. You can always contact us for any return question at service@omahasportsandgames.com.
All products are subject to a minimum 15% restocking fee based on the quality of the returned product and packaging.
Items opened, tested, used, or any other non-new condition may be eligible for return based on the manufacturer's return policy.
Shipping Damages and Issues
You must inspect your order upon reception and refuse delivery if you see damage. DO NOT sign for delivery if there is apparent damage to the product. If you sign for the delivery and later claim shipping damage, there is very little we can do to help.
If your order does not require signing at delivery and is instead just dropped off at doorstep with damage, contact us immediately with photos of the damaged boxes.
If your item(s) is defective, damaged or if you receive the wrong item, contact us immediately so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, such as custom products, special orders or personalized items. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items, gift cards, or multiple product bundle discounts.
| Specification name | Specification Value |
|---|---|
| Color pattern | White |
| Material | Metal, Glass |