Explore Scientific Binoculars BT-82 SF (75544)

The Explore Scientific BT-82 SF binoculars are part of the BT Series, designed for rugged outdoor use. These binoculars feature an IPX6-rated sealed and nitrogen-filled construction, effectively preventing internal fogging in challenging weather conditions. The lightweight magnesium housing reduces weight and enhances handling. Large binoculars like these function as double telescopes, providing each eye with its own complete lens system for full light-gathering power. This design delivers vivid images and ensures a more comfortable observation experience compared to single eyepiece systems.

The BT-82 SF binoculars provide a comfortable viewing experience with their 45-degree angled eyepieces and adjustable interpupillary distance. Extendable dew caps prevent fogging under humid or cold conditions, while the integrated carrying handle ensures easy transport and secure tripod assembly.

Specifications:
Capacity:

• Type of build: Porro prisms

• Magnification: 24x

• Front lens diameter (mm): 82

• Focal length (mm): 470

• Exit pupil (mm): 3.5

• Eye relief (mm): 15

• Eyepiece cups: Folding

• Interpupillary distance (mm): 54–76

• Glass material: BaK-4

• Lens coating: Fully multi-coated

• Focusing system: Single focusing

Special Features:

• Zoom function: No

• Eyepieces for spectacle wearers: Yes

• Image stabilizer: No

• Compass: No

• Rangefinder: No

• Splash-proof: Yes

• Watertight: Yes

• Threaded tripod connector: Yes

• Lens cover and eyepiece cap included: Yes

• Inert gas charge (nitrogen-filled): Yes

Field of View and Close Focus:

• True field of view (°): 2.6

• Apparent field of view (°): 62

• Close focus limit (m): 15

General Information:

• Series: BT

• Body material: Magnesium

• Color: Black

• Dimensions (LxWxH in mm): 445 x 226 x 122

• Weight (g): 4300

Area of Application:
These binoculars are highly recommended for astronomy due to their excellent optical performance, but they are not ideal for bird watching, hunting, travel, sports, sailing, or theater use.