Vixen Optics BT81S-A Binocular Telescope
October 24, 2011
Vixen Optics’ BT81S-A Binocular Telescope features 3.1-inch (81 millimeters) lenses coated with magnesium fluoride. The unit’s focal length is 480mm at f/5.9. It has a handle and finder bracket, and weighs 9 pounds (4.1 kilograms).
This product appeared in the December 2011 New Products page.
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