BT-70 SF Giant Binoculars
Are you looking for a large binocular to observe sessions sky, nature, and landscape? We are representing the High-quality and functional BT-70 SF Giant Binoculars. Observe the distant objects in nature during the day and the beauty of the starry sky at night. Those glowing gas nebulae, the moon with its craters, Globular star clusters, and even the planets can be observed amazingly on a clear and bright night. But also it can be seen in detail all the other distant things in ships and airplanes, landscape and nature. You can get up very close with the binoculars of EXPLORE SCIENTIFIC BT series. The binoculars bring a unique viewing pleasure! It generates brilliant and clear images even at night and at twilight because of the professional coatings on all lens surfaces and light-gathering lenses. And even when the binoculars are tilted strongly, the comfortable 45-degree viewing angle allows fatigue-free use.
A double refractor telescope.
The wide lens with full light-gathering power is ready per eye. Objects are reproduced clearly and brightly simultaneously with the binoculars, keeping eyes relaxed. This comfortable observing helps increase recognition of the most delicate details and efficiently prevents rapid eye fatigue. Those tremendous and dependable binoculars are sealed and filled with nitrogen with a magnesium housing. It is designed for rugged outdoor use. This IPX6 sealed and nitrogen-filled effectively prevents fogging of the internal optics even in difficult weather circumstances. Because of its light magnesium, the housing saves weight and makes it simple and easy to hold.
The Two EXPLORE SCIENTIFIC (20mm eyepieces of the 62 degrees) LER series are already contained. The EXPLORE SCIENTIFIC is an established manufacturer of exceedingly high-quality eyepieces in the astronomy scene. An optical system is only as pleasant and pleasing as its weakest constituent. Therefore we have decided to produce these giant binoculars with a pair of quality eyepieces of the 62 degrees Long Eye Relief series. With an apparent 62 degrees field of view and a 20mm focal length, the BT-70 binoculars produce a 20x magnification. Thus these wide-angle eyepieces offer an excellent overview (field of view 3.1 degrees) at moderate magnification. The considerable interpupillary distance of these 15mm long eye relief (LER) eyepieces and soft silicone eyecups, which can be turned inside out, guarantees a unique, relaxed, and comfortable view. Because of the water-resistant design and the argon filling, these eyepieces are easy to clean and durable. A flat and sharp image field for astronomy is advantageous and offers an awe-inspiring viewing experience even during the day.
Interchangeable eyepieces with 31.7mm plug-in diameter / 1.25 inch
Choose from available eyepieces and Adjust the magnification and field of view to your individual needs. All eyepiece types, such as 1.25 inch / 31.7mm plug-in diameter, can be used with BT series binoculars. Especially approved and endorsed the EXPLORE SCIENTIFIC eyepieces of the 82 and 62-degree series with 8 to 26mm focal lengths see the item No.02188xx &02196xx. (focal length binoculars: focal length eyepiece = magnification) It can be varied from 15x to 50x magnification. by a special brass compression ring clamp and guarantee a tilt-free position; the eyepieces are held in the binoculars.
The color used and nebula filters for astronomical observations
By screwing the corresponding filters straight into the thread of the eyepiece sleeves, you can add the contrast and visualness of details and objects. The nebula filters and use of color must be done in pairs. Fitted all EXPLORE SCIENTIFIC screw filters with 1.25inch / 31.7mm diameter (see item No. 03102xx)
Comfortable 45-degree view and single helical target
The 45-degree viewing angle grants a comfortable and relaxed observation position even when the slightly tilted binoculars. The individual can also interpupillary distance adjusted from 54 to 76mm. With good helical individual focusing, precise focusing is attained freely and effortlessly. Integrated dew caps can be taken out in high humidity and cold conditions. This refrain fogging the outer objective lenses and efficiently shields added control light coming in from the side.
A metal carrying handle is unified and integrated and situated at the center of gravity to assist the progress of the transport and ensure a secure hold during tripod assembly.
Fitted and Suited tripods and tripod connection
This sturdy photo tripod with a devoted load capacity is highly recommended when using these large binoculars. A connection is made via two 1/4 -3/8 inch threaded holes (standard photo tripod thread) in the binoculars tripod adopter. The ideal resolution is to use the optional and available EXPLORE SCIENTIFIC U-Mount with a field tripod (item No. 01-14300). It is designed for the giant binoculars of the BT series and carries these devices safely and securely. The excellent mechanism with adjustable friction in both axes grants tracking and easy moving. The binocular position is kept balanced depending on the adjusted friction intensity. Vibrations are decreased to a minimum by the massive construction of the large stainless steel tripod and the U-Mount. There are no vibrations, and the most delicate details can be observed even at high magnification. If you are looking for a perfect fit, a quality build, and an affordable all-in-one single product for passive dew fighting, the Astrozap Flexible Dew Shield is what you need. Buy to see it for yourself and add it to your cart now!
|Optical design||Achromatic refractor Porro|
|Mirror / lens diameter||70 mm|
|Focal length||400 mm|
|Apparent Facial field||62 degrees|
|Type of remuneration||Enhanced Multilayer Disposition (EMD)|
|Exit pupil min.||3.5 mm|
|Field of view||3.1 degrees|
|Water-resistance protection level||IPX6|
|Exit pupil distance||15 mm|
|Total length||370 mm|
|Total width||213 mm|
|Total height||122 mm|
|Total net weight||3400 g|