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EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis
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EXPLORE SCIENTIFIC BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN) binoklis

Produkta kods: 0114220
Zīmols: EXPLORE SCIENTIFIC
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BT-100 SF Giant Porro Type Binocular with 62° LER Eyepieces 20mm 28x100 (NITROGEN)

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 strongly.

A large binocular 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 connection
When 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 degrees
Large 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 fit
Color 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
Dimensions and weight of binocular: 520 x 270 x 155mm, 6.8kg
Housing color of binocular: white

SCOPE OF DELIVERY
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

Technical Data

FIELD OF APPLICATION
Field of application
Astronomy
Bird watching & Nature observation
Night

TYPE
Type Giant Binoculars

OPTICAL SPECIFICATIONS
Optical design
Achromatic Refractor
Porro
Magnification 28x
LE Eyepieces ✓
Mirror/Lens diam. 100 mm
Focal length 550 mm
Aperture ratio 5.5
Apparent field of view 62 degrees
Type of coating Enhanced Multilayer Desposition (EMD)
Exit pupil min. 3.6 mm
Eyepieces for eyeglass wearers ✓
Diopter setting ✓
Field of view 2.3 degrees
Near focus from 25 m

GENERAL TECHNICAL DATA
Waterproof ✓
Level of protection IPX6
Inert gas purged ✓
Tripod adapter thread ✓
Focusing system Individual eyepiece focus
Single eye adjustment ✓
Eyecups Rubber eyecups, foldable
Interpupilar distance min. 54 mm
Interpupilar distance max. 76 mm
Eye relief 15 mm
Colour white
Body material Magnesium
Dust protection caps Dust protection caps for front lens and eyepiece holder
Extended warranty 10 years

DIMENSIONS & WEIGHTS
Total length 520 mm
Total width 270 mm
Total height 155 mm
Net Weight total (incl. accessories) 6800 g
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