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Vixen BT81S-A Astronomy Binocular

Vixen BT81S-A Astronomy Binocular PLEASE CALL US IF YOU FIND A CHEAPER PRICE - FREE DELIVERY ON THIS ITEM - This 81mm astronomy binocular 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 inch 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. No eyepieces included - designed for use with the Vixen SLV and LVW range of eyepieces (excluding LV 8-24 zoom).

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£929.00
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Accessories

To buy compatible accessories for the Vixen BT81S-A Astronomy Binocular, tick the box of the relevant accessory then scroll to the bottom of this section to add the item(s) to your cart.

Sigma Micro Fibre Cleaning Cloth White:

Sigma Micro Fibre Cleaning Cloth White

Sigma cleaning cloth that is machine washable and ideal for your lenses, LCD screens and glasses. Measures approx 31 x 31cm.


£6.00
(Inc VAT)
Tick to add
Vixen SLV 10mm Eyepiece:

Vixen SLV 10mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 50 degrees. Weighs 175 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 12mm Eyepiece:

Vixen SLV 12mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 50 degrees. Weighs 172 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 15mm Eyepiece:

Vixen SLV 15mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 50 degrees. Weighs 163 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 2.5mm Eyepiece:

Vixen SLV 2.5mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 45 degrees. Weighs 173 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 20mm Eyepiece:

Vixen SLV 20mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 50 degrees. Weighs 155 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 25mm Eyepiece:

Vixen SLV 25mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 50 degrees. Weighs 151 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 4mm Eyepiece:

Vixen SLV 4mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 45 degrees. Weighs 168 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 5mm Eyepiece:

Vixen SLV 5mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 45 degrees. Weighs 165 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 6mm Eyepiece:

Vixen SLV 6mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 45 degrees. Weighs 165 grams.


£119.00
(Inc VAT)
Tick to add
Vixen SLV 9mm Eyepiece:

Vixen SLV 9mm Eyepiece

The Vixen SLV series eyepieces feature comfortable eyerelief of 20mm, twist-up eyecup for adjusting the best eye-point and high-grade Lanthanum glass for clear and high contrast viewing. Fully multi-coated optics. Apparent field of view of 50 degrees. Weighs 176 grams.


£119.00
(Inc VAT)
Tick to add

Specification

  • This 81mm astronomy binocular 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 inch 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.
  • No eyepieces included - designed for use with the Vixen SLV and LVW range of eyepieces (excluding LV 8-24 zoom).
  • Objective lens: D=81mm, F=480mm, Achromatic, single coating with magnesium fluoride.
  • Limiting magnitude: 11.3
  • Light gathering power: 134x
  • Dimensions: 480 x 190 x 155mm (L x W x H).
  • Weight: 4.1kg.
  • Visual back: 31.7mm push fit.
  • Accessories included: finder bracket shoe, carry handle and dew shields.

Images

Vixen BT81S-A Astronomy Binocular Large

Reviews


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FAQs

Ask Bristol Cameras a question about the Vixen BT81S-A Astronomy Binocular

Please check any common questions above before posting as we may not reply to any questions that have been answered previously. We reserve the right to publish your question to this website for the future benefit of other users with similar queries. We may carry out minor editorial changes to the content. All FAQ's remain copyright Bristol Cameras.

Vixen BT81S-A Astronomy Binocular Question

Date Added: 12th March 2016
Question: Can you use this binocular telescope at magnifications of 150X with the appropriate eyepieces and get good results?
Bristol Cameras Answer: The BT81S has a focal length of 480mm so to achieve this kind of magnification you would need to use eyepieces of 3.5mm or lower. Vixen recommend that you do not use any more than 10mm eyepieces (48x magnification) to achieve a satisfactory view. Ideally the less magnification the better as these binoculars are more suited to low power wide field observation rather than high power planetary.

Vixen BT81S-A Astronomy Binocular Question

Question: Is the Vixen BT81S-A Astronomy Binocular in stock?

Bristol Cameras Answer: As per most accessories listed on this website we do not have the resources to maintain stock info on several thousand smaller items. We keep many of the accessories on our site in stock and even if we don't have the Vixen BT81S-A Astronomy Binocular in stock, it is likely that it will be available from suppliers within 2-3 working days.
Vixen BT81S-A Astronomy Binocular Question

Question: How much does delivery of the Vixen BT81S-A Astronomy Binocular cost?

Bristol Cameras Answer: This depends on the total value of your order and the shipping destination. For more information on delivery costs click here.
Vixen BT81S-A Astronomy Binocular Question

Question: Can you send parcels to me outside of the UK?

Bristol Cameras Answer: Unfortunately, we do not send goods outside of the UK.
Ask Bristol Cameras a question about the Vixen BT81S-A Astronomy Binocular

Please check any common questions above before posting as we may not reply to any questions that have been answered previously. We reserve the right to publish your question to this website for the future benefit of other users with similar queries. We may carry out minor editorial changes to the content. All FAQ's remain copyright Bristol Cameras.

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