BT-ED70S-A Binocular Telescope

Product Highlights

Large binoculars with ED glass 70 mm objectives, for aesthetic observation of the starry sky, nature and landscape

  • Large binoculars with 70 mm objective lenses with ED glass
  • 31.7 mm (1.25 inch) eyepiece sleeves for interchangeable eyepieces
  • Very colour-free, high-contrast and sharp images
  • Moon, nebulae, galaxies, star clusters and nature observations
  • Individual eyepiece focusing, 45-degree viewer
  • Interpupillary distance of the eyepiece adjustable
  • GP rail, tripod thread, carrying handle and viewfinder shoe
  • Travel binoculars can also be used with photo tripods
  • Dimensions: 400 × 190 × 155 mm , Weight: 4 kg
  • High quality product - Made in Japan

£1,691.00*

Available

Product number: X014305
GTIN/EAN: 4955295143054
Product information "BT-ED70S-A Binocular Telescope"
Large binoculars with 70 mm ED glass objective lenses
Observe the beauty of the starry sky at night and distant objects in nature during the day. By customer request, we have succeeded in producing a new edition of these legendary binoculars. The ED glass lenses guarantee enormously high sharpness, contrast and colour purity even during the day. Globular clusters, luminous gas nebulae, the moon with its craters and even planets can be observed wonderfully on a clear night. But also all other distant things in nature and landscape, even ships, aircrafts and animals can be seen in detail at long distances. With the binoculars of the Vixen BT series, you can bring everything up close. The large, fast ED lenses in combination with the ultra modern magnesium fluorite coatings on all lens surfaces enable maximum light transmission. Thus, these binoculars produce bright, sharp and high-contrast images even at night and dusk, allowing for a particularly aesthetic viewing pleasure.

Comfortable travel binoculars can also be used with photo tripods
The comfortable 45-degree viewer enables comfortable viewing even when the binoculars are tilted towards the zenith. The BT-ED70S-A large binoculars are 4 kg light and particularly portable. An attached metal carrying handle ensures easy transport and a secure grip during tripod mounting. The binoculars have a standard Vixen dovetail rail as well as a standard 1/4 and 3/8 inch photo tripod thread. They can therefore be used on almost all common photo tripods and telescope mounts.

The ideal binocular mount

However, we recommend the Vixen HF2 fork mount for mounting. Thanks to its sophisticated design and precision mechanics, it offers perfect viewing comfort and practically zero vibrations. Especially for astronomical observations, a solid mount with tripod is one of the most important accessories. This guarantees observation without shaking and allows you to see even the finest details.

Interchangeable 1.25-inch eyepieces

Stay flexible and use your favourite eyepieces and ideal magnification. The BT-ED70S-A has standardised 1.25-inch eyepiece holders, allowing you to change eyepieces at any time.

Which eyepieces can be used?

All eyepieces with a 1.25'' barrel. Eyepieces with focal lengths of 8 to 26 mm are particularly recommended. The magnification can thus be varied from approx. 15x to 50x (focal length of binoculars : focal length of eyepiece = magnification). The eyepieces are held in the binoculars by a precise brass ring clamp and guarantee a tilt-free position. Depending on the interpupillary distance, the outer diameter of the eyepiece housing should not exceed a value of approx. 50 mm. Of course, two identical eyepieces of the same series should always be used.

Use of colour and nebula filters for astronomical observations

Increase the contrast and visibility of objects and details by screwing the appropriate filters directly into the thread of the eyepiece sleeves. Of course, colour and nebula filters must always be used in pairs. All EXPLORE SCIENTIFIC screw-in filters with 1.25''/31.7 mm diameter are suitable (see Art. No. 03102xx).

Comfortable 45-degree viewer and single focusing
The 45-degree viewer enables a relaxed observation position even when the binoculars are heavily tilted. The individual interpupillary distance can also be adjusted within a range of 58 to 102 mm. The fine helical focusing system makes precise focusing simple and effortless.

Retractable dewcaps
The integrated dew caps can be pulled out in high humidity and cold conditions. This prevents fogging of the outer objective lenses and effectively shields from additional stray light coming in from the side.


FEATURES
  • Objective lenses: 70 mm / ED apochromatic
  • Full multi-coating on all lens surfaces
  • Focal length 400 mm (F = 5.7)
  • Resolving power: 1.66 arcseconds
  • Limiting magnitude: Mag 11.0
  • Dimensions: 400 × 190 × 155 mm
  • Weight: 4 kg
  • Adjustable interpupillary distance: 58-102 mm
  • Integrated and retractable dew caps
  • Viewfinder shoe: Vixen Standard
  • Eyepiece mount: 1.25 inch / 31.7 mm barrel diameter
  • Single eyepiece focusing
  • Tripod mount: GP dovetail rail, 1/4 and 3/8 inch photo tripod threads.

SCOPE OF DELIVERY
  • BT-ED70S-A Large Binoculars (without eyepieces)
  • Vixen finder shoe
  • Integrated dew caps
  • Dust cover
  • Carrying handle

Body material: Aluminium
Colour: white
Colour of coating: green
Dust protection caps: Dust protection caps for front lens and eyepiece holder
Focusing system: 1.25" Helical focuser
Material: Aluminium
Material prisms: BaK-4
OPTICAL SPECIFICATIONS: ED
Optical design: Apochomatic Refractor
Product Family [Telescopes]: Refractor telescope
Type [Binoculars]: Giant Binoculars
Type of coating: Fully multi-coated

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Accessories

Vixen HF2 Fork Mount
The HF2 mount is an azimuthal fork mount for mounting large binoculars. It also requires the X000161 mounting plate for attachment of different binocular types. Not required with the BT126S-A. FEATURES Can be used with: SXG-HAL130, SXG-AL130, APP-TL130 Bearing capacity: 13 kg Weight: 3.4 kg WHAT’S INCLUDED HF2 fork mount Mounting tool

£323.00*
Vixen Mounting Plate for large Binoculars in the HF2 Fork Mount
This plate is designed for large binoculars with 1/4’’ photo thread screws. It is inserted into the HF2 fork mount. The maximum width of the binoculars must be 251mm in order for them to be mounted. FEATURES Mounting plate for large binoculars and BT series Weight: 1 kg WHAT’S INCLUDED Mounting plate for large binoculars 1/4’’ photo thread screw

£154.00*
Vixen APP-TL130 Tripod for AP, GPD & SX Mounts
The APP-TL130 tripod is a lightweight, portable tripod for all standard Vixen mounts with a 45 mm support. Compatible tripods include the Vixen HF2, SX, AP and AXJ mounts. The tripod is adjustable in 3 sections and can be retracted to a very small size. Weighing just 3 kg, it is ideal for astronomy trips. FEATURES Leg section: 3x extendable Maximum extended height: 1296 mm Minimum retracted height: 598.4 mm Material: Aluminium Weight: 3.0 kg Maximum height: 1159 mm (height above the ground) Minimum height: 526 mm (height above the ground) WHAT’S INCLUDED Aluminium tripod Adjustment pins for GP2, GPD2, AP and SX mounts

£195.00*
Vixen SXG-HAL130 Aluminum Tripod for GP, SX & AP Mounts
High-quality, stable aluminium tripod for a variety of mounts with 45 mm connections. The aluminium profile ensures firm positioning with a minimum amount of vibration. Suitable for GP2, GPD2, AP, SX, SXP, SXP2 and AXJ mounts or similar with 45 mm connections. FEATURES Robust aluminium tripod without mount Suitable for: GP-, SX- & AP mounts Height-adjustable: 81 - 130 cm Weight: 5.5 kg WHAT’S INCLUDED Aluminium tripod Adjustment pins for GP2, GPD2, AP and SX mounts

£258.00*
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 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 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)

£133.00*
Vixen SLV 50° Eyepiece 20mm (1.25'')
The SLV eyepieces with high-quality lanthanum glass provide remarkably clear and high-contrast star images right up to the edge.The lenses are fully multi-coated for high light transmission.Thanks to the large and comfortable eye relief distance of 20 mm , the eye comfort is maintained, even during longer observing sessions.Even those who wear glasses will have the entire field of view is clearly visible.The click stop eyecups can be tuned up or down to the user's preference.PROPERTIESVery high sharpness and contrast across the entire field of viewComfortable eye relief of 20mmalmost no colour defects due to lanthanum glass1.25" 31.7 mm barrel sizeTurn-down eyecup for people who wear glassesWeight: 155 gWHAT'S INCLUDEDVixen SLV 50 ° eyepieceDust caps

£133.00*
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*
OCULUM VERLAG - Fernrohr-Führerschein in 4 Schritten (GERMAN)
Please note that this astronomy book for beginners is only available in German.

£21.29*
Vixen Smartphone Adapter for Photography with Binoculars, Telescopes, Spotting Scopes and Microscopes
Make your smartphone into a photographic all-rounder with a pair of binoculars, a spotting scope, telescope or microscope.This universal smartphone holder was developed by Vixen, and is compatible with a wide range of smartphones and other lenses. The adapter fits onto eyepieces with a diameter of 19 to 53 mm. The size of the smartphone can be between 58x108 mm and 110x200 mm. The eyepiece clamp keeps the adapter centered and holds your smartphone in place. Take stunning photos of the moon's craters through your telescope, or photograph birds or other distant objects through your binoculars.The adapter is very easy to use.It is recommended to use eyepieces with a long eye relief in order to minimise vignetting.FEATURESSuitable for almost any smartphoneEase to useDesigned for eyepieces with a diameter of 19 to 53 mmCan be used with binoculars, telescope, spotting scope or microscopeDimensions: 149 mm x 90 mm x 56 mmWeight: 178 g DELIVERY CONTENTSmartphone adapter

£93.00*
BX-25 Pro Photo-Tripod
The BRESSER BX-25 Pro is a professional tripod that can be used in a variety of ways. This tripod head  is suitable for a carrying weight up to 25 kg , making it ideal for the heaviest spotting scopes in the BRESSER range. By means of Twist-Lock closures the height can be set quickly and easily with one hand. The many features such as the monopod function or the 180 ° folding legs make the tripod a versatile companion. Whether in the field or in the studio, this device offers a variety of uses. Rubber feet provide stability. FEATURES Tripod for uneven terrain Individually height-adjustable tripod legs Ball head with 25kg payload lightweight aluminum additional spikes included Monopod function light 2.7 kg total weight Fast Twist-Lock legs DELIVERY tripod Carrying case Tie rod end Allen Spikes Short Center Column Adapter Manual

£197.99*

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BRESSER Astro & Marine SF 10x50 WP binoculars
The ASTRO & MARINE binoculars from BRESSER are ideal for astronomy and maritime use, e.g. sailing and water sports enthusiasts. Robust and weatherproof per IPX6 levelThanks to their ergonomic rubber armouring, these binoculars fit securely in the hand and are also well protected against shocks and bumps. The binoculars are waterproof and filled with nitrogen. This effectively prevents fogging of the lenses, even in unfavourable weather conditions. Lightweight with tripod connection threadThe robust, yet very light construction is made possible by the most modern magnesium housing construction. Magnesium is around 35% lighter than aluminium. Due to the moderate 10x magnification and the low weight, these 10x50s are also very well suited for hands-free use. Nevertheless, there is a tripod connection thread on the centre axis. This means that the ASTRO & MARINE model can also be mounted securely on a photo tripod using the tripod adapter (Art.4914925) which is included as part of the package. Although this is not absolutely necessary with a magnification of 10x, it is highly recommended, especially for long-time astronomical observations, in order to obtain an absolutely steady image. Eyepieces for comfortable viewingThe precise single eyepiece focusing (SF) makes it possible to focus the binoculars once and then clearly observe all resolvable objects in the night sky, or on the horizon. In addition, this design prevents accidental change of focus. Foldable rubber eyecups and eyepieces with a comfortable eye relief distance (WP) of 20mm also allow those who have to wear glasses to observe, to use the entire field of view. High quality opticsThanks to fully multi-coated Bak4 optics, large 50mm objective lens diameter and the well-corrected eyepieces with 5 lenses in 3 groups, these excellent binoculars produce sharp and brilliant images. The maximum reduction of stray light achieved by internal baffles and housing/edge blackening, results in the best possible optical image and perfect contrast, even in difficult light conditions and especially at night.FEATURESBinoculars for astronomy, landscape observation and water sportsWaterproof per IPX6 level and filled with nitrogen to prevent lens foggingAlso for use in unfavourable weather conditionsExtremely high light gathering optics, making them ideal for night-time observationModerate magnification for a steady image, even when hand-holdingMagnification: 10x / Lens diameter: 50mmSingle eyepiece focus (SF) and foldable rubber eyecups, also suitable for spectacle-wearersWide pupil distance (WP) of 20mm for comfortable viewingWell corrected eyepieces for ultimate image sharpness and pinpoint star imagesModern multi-layer coatings on all lens surfaces for high light transmissionErgonomic rubber armouring - very good grip and protects against shocks and bumpsRobust construction, yet still lightweight due to magnesium housingDimensions: 191 x 202 x 66 mm / Weight: 1165 grams / Colour: blackTripod connection thread 1/4 inch available on the binocular bridgeMetal photo tripod adapter already included in deliveryWHAT'S INCLUDED Binoculars Carrying strap Dust caps Nylon travel bag Photo tripod adapter (Art. 4914925) Instruction manual

£137.00* £239.00* (42.68% saved)
HF2-BT126SS-A Complete binocular telescope set
With a new optical design and an extremely high resolution, the Vixen BT126SS binoculars provide a considerably more detailed view for astronomical observations. The BT126SS binocular telescope features two 126 mm achromatic object lenses, which provide 300% more light than the naked eye. With these binoculars, you can observe the stars at night and view far away objects in nature during the day. They are great for observing globular clusters, gas nebula, the moon with its craters and even the planets on a clear night. They also allow you to view far away objects in detail, including nature, landscapes, ships and planes. With the binoculars from the Vixen BT-series, you can get up close to anything. Thanks to the large, high-aperture lenses and cutting-edge coatings on all lens surfaces, these binoculars generate stunningly bright images even at night and at twilight. The user-friendly 45-degree eyepieces ensure fatigue-free use even at high elevation angles. The magnesium fluoride coating reduces chromatic aberration and the large aperture of 126 mm ensures a razor-sharp, contrast-rich image.Weighing just 19.4 kg, the BT-126SS-A binocular telescope set is very transportable.The binoculars also feature a metal carry handle for easy transport and additional stability when setting up the tripod. The Vixen HF2 fork mount provides additional stability and ease of use.The BT 126SS-A features a 1.25-inch eyepiece connection and allows you to change the eyepieces for different magnifications. Each eyepiece has an individual focus and an independent eyepiece plate for adjusting the interpupillary distance.FEATURES Objective lenses: 126 mm 2-lens achromat, multi-coated Focal length: 625 mm Resolution and limiting magnitude: 0.93 arc seconds; 12.3 Mag Light-gathering power: 324x Dimensions and weight: 630 x 360 x 200 mm; 19.4 kg Adapter and connections: 31.7 mm clamp DELIVERY CONTENT HF2 fork mount SXG-HAL130 tripod Carry handle Viewfinder Dew caps2 SLV 20 mm eyepieces

£4,721.00*

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BRESSER JUNIOR Refractor Telescope 70/900 EL
Observing the stars like a professional - very easy with the BRESSER JUNIOR refractor telescope 70/700 EL. It is a complete system for the exploration of the wonders of the universe, consisting of telescope, mount, tripod and all accessories needed. With an aperture of 70 mm it reveils already many details of celestial objects. The mount can not only swing the telescope left / right and up / down, it can also be used in a so-called equatorial mode, as scientists do in their observatories (see further under Special features). An additional finder scope mounted on the telescope is useful for locating celestial objects. With the erecting lens many exciting things in the environment can also be seen during daytime. With the height-adjustable tripod, the telescope can each be brought to an optimal height for large or small observers. The supplied diagonal mirror ensures a comfortable viewing. At night the moon and planets may like Saturn and Jupiter can be explored. But thanks to the 70 mm wide aperture of the telescope also many celestial objects outside our solar system are within the reach of this telescope. Star clusters many light years away and nebula impress young and old stargazers. SPECIAL FEATURESMounting with wedge: At first glance, the NG mount of the refractor telescope 90/700 NG is a very ordinary azimuth mount: an axis for left / right and one for up / down, as we know it from normal camera tripods. This mode makes sense especially with observations during the day. With the built-in wedge it can be tilted, so the whole mount can be converted to an equatorial mount for astronomy with a single operation. For use of the equatorial mount an axis is aligned with the North Star. When tracking a celestial object only a single axis needs to be moved, which clearly is a relief compared to tracking an object on the night sky with mounts that only have left / right and up / down axis. FEATURESideal beginner's setsuitable for lunar, planetary and nature observationsmount can be used in two ways: alt-azimuth and equatorialSCOPE OF DELIVERYrefractor telescope 70/900three eyepieces: 4 mm (225x), 12 mm (75x) and 20 mm (45x)heigth-adjustable aluminium tripod with accessory tray1.5x errecting lens for a laterally correct and upright imageNG mountfinderscope 6 x 25astronomy software for PC90° diagonal mirror

£117.99*