Our company is involved in preparing official permits from the Polish Ministry of Development and Technology, which allows us to export all dual-use drones, optics, and portable radiophones without VAT on the Polish side / and without VAT on the Ukrainian side.
Explore Scientific Binoculars BT-120 SF (75546)
The Explore Scientific BT Series binoculars are designed for both celestial and terrestrial observation. At night, you can enjoy breathtaking views of globular clusters, glowing nebulae, the Moon’s craters, and even planets. During the day, these binoculars provide detailed views of distant landscapes, ships, or aircraft. Thanks to large, light-gathering objective lenses and advanced multi-coating on all optical surfaces, the BT Series delivers bright, high-contrast images even in low-light conditions such as twilight or nighttime.
2213.44 $ net price (non-EU countries)
Anatolii Livashevskyi
Product Manager /
+48721808900 +48721808900
+48721808900
[email protected]
Description
In Brief:
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Bright, large-aperture binoculars ideal for stargazing
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Compatible with all 1.25-inch eyepieces for variable magnification and field of view
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Comfortable 45° viewing angle with individual focus adjustment
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Extendable dew shields prevent lens fogging
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Tripod connection with 1/4-inch and 3/8-inch threads and a practical carrying handle
The Explore Scientific BT Series binoculars are designed for both celestial and terrestrial observation. At night, you can enjoy breathtaking views of globular clusters, glowing nebulae, the Moon’s craters, and even planets. During the day, these binoculars provide detailed views of distant landscapes, ships, or aircraft.
Thanks to large, light-gathering objective lenses and advanced multi-coating on all optical surfaces, the BT Series delivers bright, high-contrast images even in low-light conditions such as twilight or nighttime. The comfortable 45-degree viewing angle allows relaxed observation even when the binoculars are pointed at steep angles, reducing neck strain and eye fatigue.
Experience a New Dimension of Observation
A large binocular like this functions as a double refractor telescope—each eye looks through a complete optical system, providing full light-gathering power for both sides. This dual-telescope setup creates an almost three-dimensional viewing experience and allows for relaxed, natural vision. Observing with both eyes enhances fine detail visibility and prevents the quick eye fatigue often experienced with monocular observation.
Rugged and Weather-Resistant Construction
The BT Series binoculars are built to withstand harsh outdoor conditions. The magnesium housing is both lightweight and extremely durable, while the IPX6-sealed and nitrogen-filled design prevents internal fogging even in humid or rainy weather. This makes them highly reliable for field use and easy to handle during long observation sessions.
High-Quality Included Eyepieces
Two 20 mm eyepieces from the Explore Scientific 62° LER Series are included. Known for producing top-tier optical accessories, Explore Scientific’s wide-angle eyepieces provide an excellent balance of magnification and field of view. The 62° apparent field of view offers a broad perspective, while the 15 mm eye relief and soft, foldable eyecups ensure comfort for both eyeglass and non-eyeglass users.
The eyepieces are also waterproof, argon-filled, and resistant to dust and moisture, making them easy to clean and suitable for both day and night use. Their flat, sharp image field delivers stunning edge-to-edge clarity, ideal for astronomy and long-distance terrestrial viewing.
Scope of Delivery:
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Large binoculars with carrying handle
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Two Explore Scientific 20 mm 62° LER eyepieces
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Dust caps for objectives and eyepiece mounts
Specifications
Optical Performance:
Type: Porro prism binoculars
Magnification: 33x
Objective Lens Diameter: 120 mm
Focal Length: 660 mm
Exit Pupil: 3.6 mm
Eye Relief: 15 mm
Eyepiece Cups: Folding
Interpupillary Distance: 54–76 mm
Glass Type: BaK-4
Lens Coating: Fully multi-coated
Focusing System: Individual focusing
Handle: Included
Features:
Zoom Function: No
Suitable for Eyeglass Wearers: Yes
Image Stabilizer: No
Compass: No
Rangefinder: No
Splash-Proof: Yes
Waterproof: Yes
Tripod Thread: Yes (1/4" and 3/8")
Lens Covers: Included
Eyepiece Caps: Included
ED Glass: No
Gas-Filled: Yes (Nitrogen)
Transport Case: Not Included
Field of View:
True Field of View: 1.8°
Apparent Field of View: 62°
Close Focus Distance: 35 m
General Information:
Series: BT
Body Material: Magnesium
Color: Black
Dimensions (L × W × H): 654 × 290 × 156 mm
Weight: 8,300 g
Recommended Use:
Astronomy: Excellent
Bird Watching: Not Recommended
Hunting: Not Recommended
Travel and Sports: Not Recommended
Sailing: Not Recommended
Theatre: Not Recommended
Data sheet
Official permits of the Ministry of Development and Technology
Our company is involved in preparing official permits from the Polish Ministry of Development and Technology, which allows us to export all dual-use drones, optics, and portable radiophones without VAT on the Polish side / and without VAT on the Ukrainian side.