Vixen BT81S-A, 81mm Astronomical Observation Binocular With Eyepieces.
What's Included With This Item:
- Vixen Optics BT81S-A, 81mm Binocular
- With Eyepieces.
Magnesium Fluoride coated, air space doublet design, dramatically reduces chromatic aberration for magnificent views. This large aperture, 81mm binocular, delivers crisp, clear images. user is provided with the sharpest images possible.
|Magnification||36x (changes with eyepieces being used) [900/eyepiece focal length = magnification]|
|Angle of View||1.1°|
|Field-of-View (@ 1000 Yds)||57' (19 m at 1000 m)|
|Exit Pupil Diameter||2.2mm (changes with eyepieces used)|
|Eye Relief||22mm (changes with eyepieces used)|
|Dimensions||7.5 x 22.8 x 8.5" (19.0 x 58.0 x 21.5 cm) WxHxD|
|Weight||11.02 lb (5000 g)|