HF2-BT81S-A Complete binocular telescope set

Giant binocular for observing the starry sky, nature and landscape. Observe the beauty of the starry sky at night and distant objects in nature during the day. Globular star clusters, glowing 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 and airplanes can be seen in detail. With the all-round binoculars of the EXPLORE SCIENTIFIC BT series, you can get up very close. Thanks to the large, light-gathering lenses and the professional coatings on all lens surfaces, these binoculars produce bright and brilliant images even at night and at twilight, providing a special viewing pleasure. The comfortable 45 degree viewing angle allows fatigue-free use, even when the binoculars are tilted upwards towards the zenith.  A large binocular can also be called a double refractor telescope Binoculars such as these can really be described as a double telescope.  In this configuration, the full light gathering power of one single telescope is available to each eye. Experience a whole new dimension of observing as a consequence. Objects are reproduced almost vividly in these binoculars and observing with both eyes is a very relaxing experience. Last but not least, this comfortable way of observation increases the recognition of the finest details (particularly in fainter deep sky targets) and effectively prevents eye fatigue. Extremely robust binoculars with magnesium housing, sealed and filled with nitrogen  The BT series binoculars are designed for tough outdoor use. The IPX6 sealed and nitrogen-filled design effectively prevents fogging of the internal optics even under difficult weather conditions. The very light magnesium housing saves weight and makes it easy to handle. Two EXPLORE SCIENTIFIC 20mm eyepieces of the 62 degree LER series already included. EXPLORE SCIENTIFIC is an established manufacturer of extremely high-quality eyepieces in the astronomy scene. An optical system is only as good as its weakest component. Therefore we have decided to deliver these giant binoculars with a pair of quality eyepieces of the 62 degree LER series. With an apparent field of view of 62 degrees and a focal length of 20mm, the BT-120 binoculars produce a 33x magnification. Thus these wide angle eyepieces offer a very good overview (field of view 1.8 degrees) at moderate magnification. The large interpupillary distance of these LER (long eye relief) eyepieces of 15mm and soft silicone eyecups, which can be turned inside out, also guarantee a comfortable and relaxed view. For astronomy, a flat and sharp image field is advantageous and offers a particularly impressive viewing experience even during the day. Due to the waterproof design and the argon filling, these eyepieces are absolutely durable and easy to clean. Interchangeable eyepieces with 1.25 inch / 31.7mm plug-in diameter Adjust the magnification and field of view to your individual needs and choose from a wide range of available eyepieces. All eyepiece types with a plug-in diameter of 1.25 inch / 31.7mm can be used with the binoculars of the BT series. Especially recommended are EXPLORE SCIENTIFIC eyepieces of the 62 and 82 degree series with focal lengths from 8 to 26mm (see item No. 02188xx and 02196xx). The magnification can be varied from 25x to 75x (focal length binoculars : focal length eyepiece = magnification). The eyepieces are held in the binoculars by a precise brass compression ring clamp and guarantee a tilt free position.  Use of colour and nebula filters for astronomical observations Increase the contrast and visibility of objects and details by screwing the corresponding filters directly into the thread of the eyepiece sleeves. The use of colour and nebula filters must of course always be done in pairs. Suitable are all EXPLORE SCIENTIFIC screw filters with 1.25inch / 31.7mm diameter (see item No. 03102xx)  Comfortable 45 degree view and helical single focus The 45-degree viewing angle allows a relaxed observation position even when the binoculars are tilted strongly. Also the individual interpupillary distance can be adjusted in a range from 54 to 76mm. With the fine helical individual focusing, precise focusing is achieved effortlessly. Extendable dew caps The integrated dew caps can be removed in high humidity and cold conditions. This avoids fogging of the outer objective lenses and effectively shields additional control light coming in from the side. Integrated carrying handle A metal carrying handle located at the center of gravity facilitates transport and ensures a secure hold during tripod assembly. Suitable tripods and tripod connectionWhen using these large binoculars, a sturdy photo tripod with an appropriate load capacity is highly recommended. The connection is made via two 1/4 inch or one 3/8 inch threaded holes (standard photo tripod thread) in the tripod adapter of the binoculars. The ideal solution is to use the optional available EXPLORE SCIENTIFIC U-Mount with field tripod (item No. 0114300). This is specially designed for the large binoculars of the BT series and carries these binoculars absolutely securely. The excellent support mechanism, with adjustable friction in both axes allows easy moving and tracking. The binocular position is kept stable depending on the adjusted friction intensity. Vibrations are reduced to a minimum by the massive construction of the U-Mount and the large stainless steel tripod. Even at high magnification there are no discernable vibrations and this allows the finest details to be observed in a chosen target.FEATURES Large binoculars for observing the starry sky, nature and landscape Observe globular star clusters, glowing gas nebulae, the moon with its craters and even planets Also wild animals, ships and airplanes can be seen in detail Highly light gathering lenses produce a bright and high-contrast image All-round binoculars, but especially suitable in twilight and at night The comfortable 45 degree viewing angle allows fatigue-free use One complete lens telescope with the full light gathering power is available per eye Extremely robust binoculars with magnesium housing, sealed and filled with nitrogen Two EXPLORE SCIENTIFIC 20mm eyepieces of the 62 degree LER series already included 33x magnification and an apparent field of view of 62 degrees, true visible field of 1,8 degreesLarge interpupillary distance of 15mm to the eyepiece lens for comfortable viewing Eyepieces interchangeable and with standardized plug-in diameter of 1.25 inch / 31.7mm The magnification can be adjusted with optional eyepieces from 25x to 75x Precise brass eyepiece compression ring clamps for tilt-free fitColor and nebula filters can be used for astronomical observations Extendable dew caps prevent fogging of the outer objective lenses and stray light Integrated carrying handle facilitates transport and mounting on the tripod Tripod connection via two 1/4 inch or one 3/8 inch threaded holes (standard photo tripod thread) Tripod recommendation: EXPLORE SCIENTIFIC U-mount with field tripod (Art.No. 0114300) Objective type: Air spaced achromatic lens (2 elements/ 1 group) Coating: full multilayer coating on all optical surfaces Aperture, focal length and aperture ratio: 120mm / 660mm / F=5.5 Sealed to IPX6 standard and nitrogen filled: yes / yes Close focus distance: 35 meters Eyepiece mount diameter: 1.25'' / 31.7mm Adjustable interpupillary distance: 54 to 76 mm Helical single focus: yes BAK-4 prism system for a bright and high-contrast imageDimensions and weight of binocular: 654 x 290 x 156mm, 8.3kg Housing colour of binocular:  white What's included Giant binocular with carrying handle (without tripod)Eyepieces ES 20mm 62 degrees LER Series (2pcs)Precisely fitting foam insert for transport Dust covers for objectives and eyepiece sockets Instruction manual

Giant binoculars for observing the starry sky, nature and landscape. Observe the beauty of the starry sky at night and distant objects in nature during the day. Globular star clusters, glowing 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 and airplanes can be seen in detail. With the all-round binoculars of the EXPLORE SCIENTIFIC BT series, you can get up very close. Thanks to the large, light-gathering lenses and the professional coatings on all lens surfaces, these binoculars produce bright and brilliant images even at night and at twilight, providing a special viewing pleasure. The comfortable 45 degree viewing angle allows fatigue-free use even when the binoculars are tilted strongly.  Large binoculars can also be called a double refractor telescope One complete lens telescope with the full light gathering power is available per eye. Experience a whole new dimension of observing. Objects are reproduced almost vividly in these binoculars and observing with both eyes is basically very relaxed. Last but not least, this comfortable way of observation increases the recognition of the finest details and effectively prevents rapid eye fatigue. Extremely robust binoculars with magnesium housing, sealed and filled with nitrogen  The BT series binoculars are designed for tough outdoor use. The IPX6 sealed and nitrogen-filled design effectively prevents fogging of the internal optics even under difficult weather conditions. The very light magnesium housing saves weight and makes it easy to handle. Two EXPLORE SCIENTIFIC 20mm eyepieces of the 62 degree LER series already included. EXPLORE SCIENTIFIC is an established manufacturer of extremely high-quality eyepieces in the astronomy scene. An optical system is only as good as its weakest component. Therefore we have decided to deliver these giant binoculars with a pair of quality eyepieces of the 62 degree LER series. With an apparent field of view of 62 degrees and a focal length of 20mm, the BT-100 binoculars produce a 28x magnification. Thus these wide angle eyepieces offer a very good overview (field of view 2,3 degree) at moderate magnification. The large interpupillary distance of these LER (long eye relief) eyepieces of 15mm and soft silicone eyecups, which can be turned inside out, also guarantee a comfortable and relaxed view. For astronomy, a flat and sharp image field is advantageous and offers a particularly impressive viewing experience even during the day. Due to the waterproof design and the argon filling, these eyepieces are absolutely durable and easy to clean. Interchangeable eyepieces with 1.25 inch / 31.7mm plug-in diameter Adjust the magnification and field of view to your individual needs and choose from a wide range of available eyepieces. All eyepiece types with a plug-in diameter of 1.25 inch / 31.7mm can be used with the binoculars of the BT series. Especially recommended are EXPLORE SCIENTIFIC eyepieces of the 62 and 82 degree series with focal lengths from 8 to 26mm (see item No. 02188xx and 02196xx). The magnification can be varied from 21x to 70x (focal length binoculars : focal length eyepiece = magnification). The eyepieces are held in the binoculars by a precise brass compression ring clamp and guarantee a tilt free position.  Use of color and nebula filters for astronomical observations Increase the contrast and visibility of objects and details by screwing the corresponding filters directly into the thread of the eyepiece sleeves. The use of color and nebula filters must of course always be done in pairs. Suitable are all EXPLORE SCIENTIFIC screw filters with 1.25inch / 31.7mm diameter (see item No. 03102xx)  Comfortable 45 degree view and helical single focus The 45-degree viewing angle allows a relaxed observation position even when the binoculars are tilted strongly. Also the individual interpupillary distance can be adjusted in a range from 54 to 76mm. With the fine helical individual focusing, precise focusing is achieved effortlessly. Extendable dew caps The integrated dew caps can be removed in high humidity and cold conditions. This avoids fogging of the outer objective lenses and effectively shields additional control light coming in from the side. Integrated carrying handle A metal carrying handle located at the center of gravity facilitates transport and ensures a secure hold during tripod assembly. Suitable tripods and tripod connectionWhen using these large binoculars, a sturdy photo tripod with an appropriate load capacity is highly recommended. The connection is made via two 1/4 inch or one 3/8 inch threaded holes (standard photo tripod thread) in the tripod adapter of the binoculars. The ideal solution is to use the optional availlable EXPLORE SCIENTIFIC U-Mount with field tripod (item No. 0114300). This is specially designed for the large binoculars of the BT series and carries these devices absolutely safely. The excellent mechanism with adjustable friction in both axes allows easy moving and tracking. The binocular position is kept stable depending on the adjusted friction intensity. Vibrations are reduced to a minimum by the massive construction of the U-Mount and the large stainless steel tripod. Even at high magnification there are no vibrations and the finest details can be observed.FEATURES Large binoculars for observing the starry sky, nature and landscape Observe globular star clusters, glowing gas nebulae, the moon with its craters and even planets Also wild animals, ships and airplanes can be seen in detail Highly light gathering lenses produce a bright and high-contrast image All-round binoculars, but especially suitable in twilight and at night The comfortable 45 degree viewing angle allows fatigue-free use One complete lens telescope with the full light gathering power is available per eye Extremely robust binoculars with magnesium housing, sealed and filled with nitrogen Two EXPLORE SCIENTIFIC 20mm eyepieces of the 62 degree LER series already included 28x magnification and an apparent field of view of 62 degrees, true visible field of 2,3 degreesLarge interpupillary distance of 15mm to the eyepiece lens for comfortable viewing Eyepieces interchangeable and with standardized plug-in diameter of 1.25 inch / 31.7mm The magnification can be adjusted with optional eyepieces from 21x to 70x Precise brass eyepiece compression ring clamps for tilt-free fitColor and nebula filters can be used for astronomical observations Extendable dew caps prevent fogging of the outer objective lenses and stray light Integrated carrying handle facilitates transport and mounting on the tripod Tripod connection via two 1/4 inch or one 3/8 inch threaded holes (standard photo tripod thread) Tripod recommendation: EXPLORE SCIENTIFIC U-mount with field tripod (Art.No. 0114300) Objective type: Air spaced achromatic lens (2 elements/ 1 group) Coating: full multilayer coating on all optical surfaces Aperture, focal length and aperture ratio: 100mm / 550mm / F=5.5 Sealed to IPX6 standard and nitrogen filled: yes / yes Close focus distance: 25 meters Eyepiece mount diameter: 1.25'' / 31.7mm Adjustable interpupillary distance: 54 to 76 mm Helical single focus: yes BAK-4 prism system for a bright and high-contrast imageDimensions and weight of binoculars: 520 x 270 x 155mm, 6.8kg Housing color of binoculars:  white SCOPE OF DELIVERY Giant binoculars with carrying handle (without tripod)Eyepieces ES 20mm 62 degrees LER Series (2pcs)Precisely fitting foam insert for transport Dust covers for objectives and eyepiece sockets Instruction manual

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

With the Classic 70/350, BRESSER has developed a light weight and compact refractor telescope, with good light gathering power for sky observing, landscape and wildlife viewing alike. The telescope is very easy to set-up, easy to use and highly transportable. It is equally useful for nature enthusiasts, who are searching for a powerful telescope which offers a bright and sharp view, as it is for astronomers. It is ideal as a travel scope, due to its light weight and compact nature. The Classic 70/350 comes supplied with a 90° Erecting-prism (1.25"´/31,7mm) and shows an upright and corrected image. The supplied field tripod is a sturdy mount for the telescope. It is adjustable in height from 28-63inch (73-160cm) and makes the observation much more comfortable no matter what height the user is. A carry case for the tripod is also supplied.The telescope is provided with three eyepieces, a 20mm, 12.5mm and 4mm, giving respective powers of 17.5x (ideal for finding targets), 28x ideal for more detailed nature study and wide field astronomical targets) and 87.5x (this is enough to resolve Saturn as a ringed object and reveal a wealth of detail on the Moon).  As the telescope takes standard 1.25" gauge eyepieces, you can add to your eyepiece collection easily with eyepieces and other accessories (Barlow lenses etc.) from various manufacturers.  The maximum practical magnification of this telescope as around the 130x mark - though views of brighter targets like the Moon could be pushed a little further.The telescope is also supplied with a smartphone holder to take photos with your phone through the eyepieces - easily sharing the views you get with friends and family. FEATURES Quick set-up and no tools necessary Ideal for traveling because light-weight and compact Bright 5x24 optical finder scope with cross hair Erecting-prism for a upright and correct image Quick lock adapter on optical tube Easy and sensitive motion and lock possible due to the lever handle Powerful multicoated objective lens for a bright and tack-sharp image All accessories you need as supplied - getting started in only a few minutes WHAT'S INCLUDED Telescope tube Stable aluminium field-tripod, max. length 160cm 5x24 finder scope with crosshair 90° Erecting prism 1.25inch (31.7mm) 3 eyepieces: 20mm, 12.5mm and 4mm all 1.25inch (31.7mm) shaft diameter Smartphone-holder for taking pictures Carry bag for field-tripod Manual

HINWEIS: Es handelt sich bei diesem Artikel um Gebrauchtware bzw. Rückläufer. Das bedeutet: Der Artikel kann leichte Gebrauchsspuren aufweisen und die Verpackung kann von der Originalverpackung abweichen. Bitte beachten Sie, dass für Refurbished Artikel generell 12 Monate Garantie gelten Das BRESSER JUNIOR Schülermikroskop bietet mit seinem reichhaltigen Zubehör einen optimalen Einstieg in die Mikroskopie. Einzigartig bei diesen Modellen ist das Barlow-Zoom-System im Okularstutzen: Durch eine herausziehbare Zusatzlinse kann die Vergrößerung bei visueller Beobachtung stufenlos bis zum 2-fachen verändert werden, so dass sich zusammen mit 3 Objektiven und 2 wechselbaren Weitfeld-Okularen Vergrößerungen von 40x bis 1600x erzielen lassen. Das BRESSER JUNIOR Schülermikroskop verfügt über eine regelbare LED für Durchlicht und Auflicht inkl. Filterscheibe mit Farbfiltern und Blenden. So kann die Beleuchtung immer optimal eingestellt werden. Durch die zusätzliche Auflichtbeleuchtung können auch Objekte mikroskopiert werden, die nicht durchsichtig sind, wie z.B. Blätter, kleine Insekten und vieles mehr. Damit fällt der Einstieg in die Mikroskopie besonders leicht!Die Spannungsversorgung erfolgt über Batterien (drei Stück Typ AA), so dass auch ohne Steckdose in der Nähe mikroskopiert werden kann. Im Zubehör sind bereits Dauerpräparate und 5 leere Objektträger und Deckgläschen zur Anfertigung eigener Präparate enthalten. Zudem ist ein Präparierbesteck, bestehend aus einem MicroCut, einem Messer, einer Pinzette, einem Stab und einem Röhrchen im Set enthalten.Der Smartphone-Adapter ermöglicht es, die Aufnahmen auf deinem Smartphone abzuspeichern oder mit Freunden und der Familie zu teilen! Es gibt so viel spannendes im Mikrokosmos zu entdecken, starte jetzt mit deinem BRESSER Schülermikroskop ! Erhältlich in den folgenden Farben: Rot; Grün; Blau; Lila EIGENSCHAFTEN Biologisches Mikroskop Barlow-Zoom-System LED-Beleuchtung mit Durch- und Auflicht Batteriebetriebene Beleuchtung (3x AA-Batterien) Umfangreiches Zubehör, um sofort loszulegen Max. Objekthöhe bei Auflicht: ca. 4 mm (ohne Objektträger) Mit Experimentier-Set für die Aufzucht von Urzeitkrebsen (Artemia) LIEFERUMFANG Mikroskop 2 Weitfeld-Okulare: 10x und 20x 3 Objektive: 4x, 10x und 40x Barlow-Linse mit bis zu 2-facher Vergrößerung Mikroskopierbesteck Experimentier-Set (Lupendose, Artemia-Eier, Hefe) Microcut-Mikrotom Leere Objektträger und Deckgläser DauerpräparateBatterien (3 Stück AA) Smartphone-Adapter Abdeckhaube  

Smart Telescope for Everyone: Easy Access to the Night Sky Reach for the stars with the ZWO Seestar S50 Smart Telescope. This innovative, smart apochromat combines high-quality optics and smart technology with incredible ease of use! Imagine sitting relaxed on your terrace, a glass of wine in hand, while the Seestar S50 explores the vast expanses of the universe for you and sends real-time images to your smartphone or tablet. Astronomy from the Comfort of Your Couch Simply choose your desired object from the countless galaxies and nebulae available in the star catalog of the intuitive app. The ZWO Seestar S50 Smart Telescope will automatically move to the selected object. The all-rounder automatically focuses on the celestial object before beginning the capture and sends real-time images to your smartphone or tablet. The smart telescope independently sets the optimal camera settings such as exposure time, ISO value, or aperture. High-Quality Optics Meets Smart Technology The high-quality apochromat refractor optics of the Seestar S50 ensure exceptionally clear and color-accurate images. The combination of top-notch optics, advanced automatic star recognition, and effective GoTo functionality makes this smart telescope a powerful instrument for night observation and astrophotography – accessible to everyone! The integrated camera supports high resolutions that capture even the finest details in distant galaxies and nebulae. Focus on the Essentials The Seestar S50 features an integrated filter change mechanism that can be controlled via the app. By default, the UV/IR-CUT filter is used, eliminating unwanted infrared and ultraviolet light while allowing the crucial H-alpha emission nebula band for astronomical photography to pass through. This results in more contrast-rich images of many deep-sky objects. Automatic Image Stacking for Razor-Sharp Shots The Seestar S50 uses the stacking method for creating astrophotos. Multiple individual images are combined or "stacked" in real-time to form a new image. The final image becomes sharper and more detailed as more individual images are combined. Experience how a galaxy millions of light-years away takes shape before your eyes, revealing more details with each passing minute. The result is exceptionally clear images that reveal the depths of space with impressive detail. For Stacking Pros Too Already familiar with stacking and prefer to do the image processing yourself? No problem – the Seestar saves each individual image in RAW format in its internal storage on request. Also a Master of Observation During the Day Not only stars and galaxies at night, but the Seestar S50 also offers fascinating observation possibilities during the day. Create landscape images and safely observe the sun with the included solar filter, marveling at its impressive sunspots. The S50 is a true all-rounder for any time of day or night. Share Your Discoveries The Seestar S50 makes it easy to quickly and easily share your astrophotographic achievements with friends or the astronomy community. With just a few clicks, you can publish your images directly from the app on social networks. Whether capturing fascinating lunar craters, glowing nebulae, or colorful galaxies – share your observations and inspire others with your discoveries! FEATURES Optic Type: Apochromat Refractor Automatic image stacking for enhanced sharpness and detail without extensive PC post-processing Smart telescope with fully automatic alignment and tracking Telescope for night and solar observation as well as landscapes Operation via an intuitive app (iOS/Android) Live-view observation and photography in real-time Compact and lightweight design for maximum mobility Integrated Wi-Fi function High optical resolution for sharp and detailed astrophotography SCOPE OF DELIVERY ZWO Seestar S50 Smart Telescope Integrated camera for high-resolution astrophotography Solar filter for safe daytime observations Carbon tripod Carrying case USB-C charging cable (power adapter not included) User manual Access data to the extensive star and galaxy catalog app

Large binoculars with 70 mm ED glass objective lensesObserve 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 tripodsThe 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 mountHowever, 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 eyepiecesStay 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 observationsIncrease 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 focusingThe 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 dewcapsThe 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.FEATURESObjective lenses: 70 mm / ED apochromaticFull multi-coating on all lens surfacesFocal length 400 mm (F = 5.7)Resolving power: 1.66 arcsecondsLimiting magnitude: Mag 11.0Dimensions: 400 × 190 × 155 mmWeight: 4 kgAdjustable interpupillary distance: 58-102 mmIntegrated and retractable dew capsViewfinder shoe: Vixen StandardEyepiece mount: 1.25 inch / 31.7 mm barrel diameterSingle eyepiece focusingTripod mount: GP dovetail rail, 1/4 and 3/8 inch photo tripod threads.SCOPE OF DELIVERYBT-ED70S-A Large Binoculars (without eyepieces)Vixen finder shoeIntegrated dew capsDust coverCarrying handle