Orion GiantView BT-100 are professional astronomical binoculars, which will also be perfect as an instrument for observing the landscape in daylight conditions.

This model is equipped with an optical system with a lens diameter of 100 mm, thanks to which its light-gathering capacity is more than 50 percent greater than that of the 80 mm models. The large amount of collected light guarantees an extremely clear image of many astronomical objects, starting from the Moon and ending with bright nebulae. To improve the contrast, all lenses of the Orion GiantView BT-100 binoculars have been covered with a full multilayer coating.

The binoculars are compatible with glasses with a frame diameter of 1.25". The set includes two glasses with a focal length of 18 mm and an apparent field of view of 65°. These glasses allow the installation of separately available filters, such as Orion SkyGlow or UltraBlock, which by blocking light pollution, enable astronomical observations even in the vicinity of large cities.To improve the comfort of observation both in day and night conditions, the glasses are mounted at an angle of 45 ° .

The body of the binoculars has been made in such a way as to ensure its water resistance and shock resistance. Thanks to the filling with dry nitrogen, the risk of fogging of the optical elements with a sudden change of temperature has been eliminated.

Attention! Orion GiantView BT-100 can be mounted on tripods equipped with a 1/4"-20 connector, but due to the heavy weight of this instrument, it is recommended to use tripods designed to work with a large load em.

The most important features of the Orion GiantView BT-100 binoculars

• optical system with an aperture of 100 mm enabling effective collection of light at night and obtaining the highest image detail during daytime observations
• 18 mm focal length glasses included in the set, giving a total magnification of 31x
• the possibility of mounting other glasses with a frame diameter of 1.25 "
• waterproof housing filled with dry nitrogen
• connection to a tripod via a standard 1/4" connector

Technical parameters

• magnification: 31x
• Lens diameter: 100 mm
• focal length: 550mm
• Exit pupil: 3.2 mm
• eye relief: 17 mm
• field of view (true): 2.1° / 37 m @ 1000 m
• field of view (apparent): 65° (with 18 mm eyepieces)
• type of prisms: Porro
• prism material: BaK-4 glass
• anti-reflective coating: full multi-coating (FMC)
• eyepiece spacing: 54 - 76 mm
• glasses frame diameter: 1.25"
• glasses fixation: compression ring
• glasses position: angular, 45°
• focus adjustment: individual for each eyepiece
• minimum focusing distance: 24 m
• dioptric adjustment: yes
• waterproof: yes
• inert gas filling: yes, nitrogen
• the possibility of mounting on a tripod: yes
• tripod mount: 1/4"-20 thread
• deflectors: yes, retractable
• body finish: white
• weight: 6600g

Set elements

• Orion GiantView BT-100 binoculars
• two 18 mm 1.25" wide-angle glasses
• caps for glasses and lenses
• transport box