Make a great view even better with Vixen's BT81S-A Binocular Telescope. You will see spectacular views of comets and star clusters. The Magnesium Fluoride coated, air space doublet design, dramatically reduces chromatic aberration for magnificent views. This large aperture, 81mm binoculars, deliver crisp, clear images.The BT81S-A Binocular Telescope 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.
Aperture: 81mm multi coated
Focal length: 480mm (3.1"). (f5.9)
Resolving Power: 1.43 arc sec.
Light Gathering: 134x
Optics: Multi Coated
Interpupillary Dist. : 2.2" to 4"
Dimensions: 18.9 x 7.4 x 6 inches
Features : Carry Handle, Finder Bracket Weight : 9 lbs