Make a great view even better with Vixen's NEW BT81S-A Binocular Telescope. You will see spectacular views of comets and star clusters. This large aperture, 81mm binoculars, are newly designed with air spaced doublet objective lenses. This delivers crisp, clear images virtually free of chromatic aberration.
The BT81S-A is very portable, at just 9 lbs in weight, so that it can easily be taken to all your observing locations. Use with Vixen's NLV or LVW series Eyepieces for fantastic views. Not recommended for use with eyepieces with focal length less than 10mm.
Specifications:
* Aperture Ratio F/5.9
* Aperture : 81mm (3.1")
* Focal length - 480mm.
* Resolving Power: 1.43 arc sec.
* Light Gathering: 134x
* Interpupillary Distance: 2.2" to 4"
* Mount Block: Dovetail Bar for SX/GP Tripods
*Visual Back: 31.7 mm - Friction Fit
*Dimensions: 18.9 x 7.4 x 6 inches
*Features: Carry Handle, Finder Bracket
* Weight : 9 lbs
