Vixen BT81S-A Astronomy Binoculars

Product Description

The Vixen BT81S-A Binoculars deliver a crystal clear, sharp view thanks to the new optical design. Its lightweight body makes this instrument portable and easily mounted on good photo tripods. The air-spaced doublet optics in this 81mm are magnesium fluoride coated to help reduce the effects of chromatic aberration and increase contrast.

Delivery Time
Delivery is usually around 7-10 business days with this product which comes direct from the supplier.

Easy to mount
Mounting the binoculars (4.1kg) is a simple process as they come supplied with a standard Vixen dovetail mounting bar for use with equatorial or altaz mounts. The dovetail bar also has 1/4" thread sockets for use with good conventional photographic tripods.

Standard Eyepiece Fitting
The visual backs on this binocular allows the use of any brand of 1.25 inch eyepieces allowing you to tailor magnification and use standard filters.

Specifications
Model BT81S-A
Objective lens D81mm F480mm Achromatic, single coating with Mgfl
Limiting magnitude 11.3
Light gathering power 134x
Dimensions L480 x W190 x H155mm
Weight 4.1kg (9lb)
Visual back 31.7mm push fit
Eyepieces not included
Accessories included Finder bracket shoe, carry handle & dew shields, lens caps