HF2-BT81S-A Complete binocular telescope set

Product Highlights

Vixen large binoculars complete set with 81-mm binocular, tripod, mount, and two eyepieces for observing the starry sky, nature, and landscape

  • Complete set with mount and eyepieces
  • Exchangeable eyepieces 81 mm objective lenses
  • Resolution and limiting magnitude: 1.43 arc seconds; 11.3
  • Razor-sharp and contrast-rich image
  • Weight of optics: 4.1 kg
  • Total weight: 14.1 kg

£1,916.00*

Available

Product number: X000163
GTIN/EAN: 4955295380664
Product information "HF2-BT81S-A Complete binocular telescope set"
Take a look through the new Vixen BT-81S-A binocular telescope.
This model is ideal for observing gas nebula, star clusters and comets.
The magnesium fluoride coating reduces chromatic aberration and the large aperture of 81 mm ensures a razor-sharp, contrast-rich image.
Weighing just 4.1 kg, the BT-81S-A binocular telescope is very transportable.

FEATURES
  • Objective lenses: 81 mm 2-lens achromat, multi-coated
  • Focal length: 480 mm (f5.9)
  • Resolution and limiting magnitude: 1.43 arc seconds; 11.3
  • Light-gathering power: 134x
  • Dimensions and weight: 480 x 190 x 155 mm; 14.0 kg
  • Adapter and connections: 31.7 mm clamp

WHAT’S INCLUDED
  • HF2 fork mount
  • SXG-HAL130 tripod
  • Carry handle
  • finder shoe
  • Dew caps
  • 2 SLV 20 mm eyepieces
  • Swing bracket binocular cradle
Body material: Aluminium
Colour: white
Colour of coating: blue
Dust protection caps: Dust protection caps for front lens and eyepiece holder
Field of application [Binoculars]: Astronomy, Bird watching & Nature observation, Long-range observation, Night
Focusing system: 1.25" Helical focuser
Material: Aluminium
Optical design: Abbe-König, Achromatic Refractor
Product Family [Telescopes]: Refractor telescope
Type [Binoculars]: Giant Binoculars
Type of coating: Multi coated

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Accessories

Vixen SLV 50° Eyepiece 25mm (1.25'')
The Vixen SLV eyepieces use high-quality lanthanum glass to deliver remarkably clear and high-contrast star images right up to the edge of the field of view.All lenses are fully multi-coated for high light transmission.Twist up eyecups allow the user to set observing height to their own comfortable specification.  20mm eye relief means that even those who have to wear glasses to observe are able to see right to the edge of the field of view.PROPERTIESVery high sharpness and contrast across the entire field of viewComfortable eye relief of 20mmalmost no chromatism visible due to lanthanum glass31.7 mm receptacle connectionEyecup that can be turned down for glasses wearersWeight: 151gWHAT'S INCLUDEDVixen SLV 50 ° eyepieceDust caps

£133.00*
Vixen SLV 50° Eyepiece 15mm (1.25'')
​The Vixen SLV series are the modern take on the classic Vixen Lanthanum eyepieces. These eyepieces were legendary for their generous eye relief and precise nature, making them a firm favourite with planetary, lunar and double star observers. This 15mm SLV is an excellent eyepiece for medium power for most telescopes, an ideal general purpose eyepiece and provides excellent comfort with long eye relief. The SLV Series of Vixen Eyepieces feature a hexagonal shaped eyepiece body, long 20mm eye relief, and twist up click stop eyecup for adjusting to the most comfortable viewing. The SLV eyepieces feature high grade lanthanum glass, and deliver remarkably clear and high contrast star images to the edge of the viewing circle. The lenses are fully multicoated for high light transmission.Size 31.7mm/1.25"Apparent FOV 50°Eye relief 20mmWeight 168g (5.92oz)

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Vixen SLV 50° Eyepiece 12mm (1.25'')
​The Vixen SLV series are the modern take on the classic Vixen Lanthanum eyepieces. These eyepieces were legendary for their generous eye relief and precise nature, making them a firm favourite with planetary, lunar and double star observers. This 12mm is an excellent eyepiece for medium to higher power on most telescopes, an ideal general purpose eyepiece and major improvement over standard eyepieces. The SLV Series of Vixen Eyepieces feature a hexagonal shaped eyepiece body, long 20mm eye relief, and twist up click stop eyecup for adjusting to the most comfortable viewing. The SLV eyepieces feature high grade lanthanum glass, and deliver remarkably clear and high contrast star images to the edge of the viewing circle. The lenses are fully multicoated for high light transmission.Size 31.7mm/1.25"Apparent FOV 50°Eye relief 20mmWeight 168g (5.92oz)

£133.00*
Vixen SLV 50° Eyepiece 10mm (1.25'')
​The Vixen SLV series are the modern take on the classic Vixen Lanthanum eyepieces. These eyepieces were legendary for their generous eye relief and precise nature, making them a firm favourite with planetary, lunar and double star observers. This 10mm is an excellent eyepiece for medium to higher power on most telescopes, an ideal premium replacement for eyepieces supplied with telescopes, especially good for Planetary observers. The SLV Series of Vixen Eyepieces feature a hexagonal shaped eyepiece body, long 20mm eye relief, and twist up click stop eyecup for adjusting to the most comfortable viewing. The SLV eyepieces feature high grade lanthanum glass, and deliver remarkably clear and high contrast star images to the edge of the field of view. The lenses are fully multicoated for high light transmission.Size 31.7mm/1.25"Apparent FOV 50°Eye relief 20mmWeight 168g (5.92oz)

£133.00*
Vixen rigid Accessory Tray for HAL130 and Porta II Tripods
The Vixen rigid Accessory Tray for HAL130 and Porta II Tripods offers practical storage space for eyepieces and various accessories.It also improves the overall stability of the tripod.The tray can be used on the HAL130 and SXG HAL 130 for GP and SX, as well as on the Porta II tripod.PROPERTIESFor eyepieces and various accessoriesIncreases the stability of the tripodsCan be used on HAL130, SXG HAL 130 and Porta tripodsWHAT'S INCLUDEDTray for tripodsScrew set 

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Vixen SG-L02 Headlamp red-light white-light
The perfect LED head torch for nighttime observations! Adjusting your eyes to the dark surroundings is very important when making astronomical observations. In dark areas, it is very difficult to use astronomical equipment without a suitable light. With normal lights, however, the light intensity is more important than protecting your eyes against bright light. Using these lights at night makes your pupils contract, which can make it difficult for your eyes to readjust to the darkness. The SG-L01, our first astronomy LED lamp, featured a built-in red LED that provided a solution to this problem. However, the red light did not offer optimal visibility. On our new astronomy LED light, the SG-L02, the LED lights produce warm light to improve visibility. They also ensure that your eyes stay adapted to the dark. The LEDs do not emit light in the sensitive range of 555 nm. The brightness of the white light can be adjusted between 3 and 42 lumen, while the red light can be adjusted between 0.28 and 7.62 lumen. FEATURES Dimmable red light ensures that your eyes stay adapted to the dark Built-in rechargeable battery, charges via USB Waterproof design LED colour can be switched from red to white 0.28 to 7.62 lumen for red light 3 to 42 lumen for white light Dimensions: 41 mm x 33 mm x 30 mm Weight: 29 g DELIVERY CONTENT SG-L02 head torch Strap (size S) Strap (size L) Pocket clip Cable for charging the battery (USB-A plug to USB Micro-B plug)

£65.00*
Vixen XY Red Dot Finder Scope II
Red dot finder for astronomical telescopes. This finder scope provides an easy way to align your telescope with objects in the night sky.The brightness of the dot can be adjusted via a dial.Designed for the Vixen viewfinder shoe FEATURES Weight: 185 g / 6.53 oz Battery: CR2032 Magnification: 1x 1/4" screw hole, adjustable red pointDELIVERY CONTENTLED red dot finderCR2032 battery

£77.00*
Vixen Viewfinder 7x50, with illuminated reticule
The Vixen Viewfinder 7x50, with illuminated reticule is an exceptionally high quality optical finder scope, featuring 50 mm Achromatic objective. The internal crosshairs are accurately inscribed and can be illuminated with a battery-powered LED attachment, which can be varied in brightness to the user's requirements. This finder gives a field of view of 7.2° in the night sky. Please note: this finder does not come with a bracket, but will fit numerous standard finder brackets - the X000288 Vixen S 50 mm finder scope short holder, or the X000073 Vixen XY finder scope long holder are particularly recommended. FEATURES Finder with 50 mm achromatic optics Field of view: 7.2° Battery: CR2032 Dimensions: 218x53 mm Weight: 0.375 kg WHAT'S INCLUDED: Viewfinder 7x50, with illuminated reticule

£145.00*
Vixen XY finder scope holder, long with spring
​Long bracket for the Vixen 7x50 finder item # 8616.For use on the Vixen finder shoe, used on many telescopesPROPERTIESSize: 50mm × 71mm × 131mmWeight: 170 g / 6.0 ozBuilt-in spring anti-slip mechanismFor Vixen finder holdersWHAT'S INCLUDEDFinder holder with spring

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Vixen S 50 mm finder scope holder, short
​Vixen S 50mm finderscope bracket short, for 50mm findersFor attaching a 50 mm finderscope to the standard Vixen finder shoe, found on many designs of telescopes (not just Vixens)PROPERTIES50mm finderscope bracket shortFor attaching a 50 mm finderscopeCompatible with standard Vixen finder shoeWeight: 195 gWHAT'S INCLUDED50mm finderscope bracket short

£74.00*

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£199.00* £285.00* (30.18% saved)
BRESSER Spezial Astro SF 15x70 Binoculars
SPEZIAL ASTRO SF 15x70 binoculars from BRESSER are ideal for astronomy and landscape observation. Thanks to fully multi coated Bak-4 glass material, the extra large objective 70mm lens diameter and highly corrected eyepieces with 5 lenses in 3 groups, these binoculars provide bright, crisp images from edge to edge of their field of view. The high 15x magnification is convenient not only for observing astronomical objects but is also practical for viewing distant terrestrial objects. Due to a very high reduction of stray light, the binoculars deliver the best possible picture and excellent clarity. With the individual eyepiece focus set you can get a sharp image for all astronomical distances, with no "focus creep" to spoil the view . Foldable rubber eyecups give eye glass wearers the possibility of making the best use of these binoculars wide field of view. Large diameter ocular eyepiece lenses provide extremely comfortable viewing, making longer observations possible without eye fatigue.The binoculars are waterproof and ARGON gas filled to avoid internal fogging. The ergonomic rubber armouring provides a good grip and is also protected against shocks, making them rugged and ideal for transportation. With the tripod thread in the lengthened centre axis, the SPEZIAL ASTRO can be mounted onto any photographic tripod. For tripod use the tripod adapter (part No. 4914925) is icluded. The use of a tripod is highly recommended, as hand holding at the high magnification of 15x makes it difficult to obtain a steady image. FEATURES binoculars for astronomical and landscape observations extremely high light gathering capacity  high magnification for for distant objects fully multi coated optics waterproof and ARGON gas filled against fogging magnification: 15x / objective lens diameter: 70mm individual eyepiece focus and foldable rubber eyecups highly corrected eyepieces for crisp images from edge to edge ergonomic rubber armouring - ruggedly protected against shocks dimensions: 290x215x85mm / weight: 1900g tripod thread availabletripod adapter included SCOPE OF DELIVERY binoculars neckstraptripod adapter dust covers caseinstruction manual

£295.00*
HF2-BT81S-A Complete binocular telescope set
Take a look through the new Vixen BT-81S-A binocular telescope. This model is ideal for observing gas nebula, star clusters and comets. The magnesium fluoride coating reduces chromatic aberration and the large aperture of 81 mm ensures a razor-sharp, contrast-rich image. Weighing just 4.1 kg, the BT-81S-A binocular telescope is very transportable. FEATURES Objective lenses: 81 mm 2-lens achromat, multi-coated Focal length: 480 mm (f5.9) Resolution and limiting magnitude: 1.43 arc seconds; 11.3 Light-gathering power: 134x Dimensions and weight: 480 x 190 x 155 mm; 14.0 kg Adapter and connections: 31.7 mm clamp WHAT’S INCLUDED HF2 fork mount SXG-HAL130 tripod Carry handle finder shoeDew caps 2 SLV 20 mm eyepieces Swing bracket binocular cradle

£1,916.00*

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Vixen BT-81S-A Astronomy Binoculars
Take a look through the new Vixen BT-81S-A binoculars. You will be impressed when you use them to observe gas nebula, star clusters or comets. The magnesium fluoride coating reduces chromatic aberration and the large aperture of 81 mm ensures a razor-sharp, contrast-rich image. The BT-81S-A binocular telescope set weighs 4.1 kg, is portable and also exceptionally suited for nature observations. FEATURES Objective lenses: 81 mm 2-lens achromat, multi-coated Focal length: 480 mm (f5.9) Resolution and limiting magnitude: 1.43 arc seconds; 11.3 Light-gathering power: 134x Dimensions and weight: 480 x 190 x 155 mm; 4.1 kg Adapter and connections: 31.7 mm sockets WHAT’S INCLUDED Binoculars 80 mm Carry handle Viewfinder Dew caps

£1,215.00*