Altair 100mm 90 Degree Giant Observation Binoculars

Further details

Mounting the binoculars: For terrestrial use and casual astronomical use we recommend a large video and or camera tripod. We recommend the Altair Sabre mount with vixen clamps and Heavy Duty L-Bracket for more serious or extended observation especially at higher powers.

Main features:
Very bright image and large field of view, well suited for observation of bright deep sky objects.
Enables use of 1.25" Light Pollution filters, such as the Altair Premium 1.25" CLS filters.
Extra large prisms with top quality multi-coatings on all optical surfaces.
High quality independently focusing 1.25" eyepiece holders - compression-fit with self centring brass inserts.
Tough, light magnesium alloy casing.
Includes a carry handle with sight.
The base has a standard 3/8" Photo tripod thread and 1/4" Photo tripod adapter so you can use your giant binoculars with a standard tripod. An additional pair of in-line threaded holes allow mounting on a Vixen-format dovetail bar.

Technical specifications:
Dimensions 550 X 270 X 200mm
Weight 7.1kg
Interpupillary distance 54-76mm
Dewshield Dia. 116mm
Objective Lens Diameter 100mm
Multi-layer coatings on all surfaces.
Focal Length 550mm
100mm F5.5 Proprietary CDGM dual element objective lens with improved colour correction.

Performance with included 18mm Ultraflat Eyepieces:
Minimum Focusing Distance 25m
Eyepiece Lens Structure(Elements/ Groups) 8/5 Ultra-flat design
Eyepiece Focal Length 18.45mm
Magnification with 18mm Eyepieces 30x
Real Field of View 2.2° Apparent Field of View 65-66°
Field of View at 1000m = 38.4m
Exit Pupil f3.3mm
Relative Brightness 10.9
Twilight Factor 54.8
Eye Relief 20mm
Eyepiece Weight 200g
Eyepieces Waterproof: Yes

Delivery charge £5.95