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Vixen BT81S-A Binoculars


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Vixen BT81S-A Binoculars

The Vixen BT81S-A is a popular binocular for astronomical use, featuring 81mm objective coated optics and interchangeable 1.25" eyepiece holders, with individual helical focusing.

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Vixen BT81S-A Binoculars

The Vixen BT81S-A Binoculars delivers crystal clear, sharp views through its new optical design. Its lightweight body ensures that you can take it to any observing location.

The air-spaced doublet optics in this 81mm are magnesium fluoride coated to help reduce the effects of chromatic aberration.

Mounting the binoculars is a simple process as they come supplied with a Vixen dovetail mounting bar for use with equatorial or altaz mounts. The dovetail bar also has 1/4" thread sockets for use with conventional tripod panheads.

An optional altaz fork mount is available and allows the binoculars to be used on the optional SX-HAL130 or SXG-HAL130 tripods. These provide a stable but lightweight tripod base for this excellent "space binocular

Model BT81S-A
Objective lens D=81mm F=480mm 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 (optional) SLV and LVW with 31.7mm are recommended excluding LV8-24 Zoom
Accessories included Finder bracket shoe, carry handle & dew shields

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