Altair 100mm 45 Degree Giant Binoculars

Further details

Imagine the light gathering power of two 4" refractor telescopes - one for each eye! Use your favourite 1.25" standard astro eyepieces for daytime nature viewing, or lunar and deepsky observation. You can even use Altair 1.25" City Light Suppression CLS filters, which isn't possible with normal binoculars.

The included 18mm Ultra-flat eyepieces give a 65° field of view, and the overall brightness of the images is quite surprising compared with using binoviewers in a 100mm telescope with the same aperture, because each eye get's 100% of the light from 100mm aperture objective lens.

The 1.25" self-centering eyepiece holder focal position allows most eyepieces to come to focus including Altair Astro, Tele Vue Delos, Nagler, Panoptic, and the Docter 12.5 mm UWA. Of course you can also use standard 1.25" astronomy filters on the eyepieces to enhance viewing even more.

Every binocular has collimation checked before shipping ensuring you of the highest quality images possible.

Mounting the binoculars:
For terrestrial use and casual astronomical use we recommend a large sturdy 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 deepsky objects.
Independent helical focusers with self-centering compression eypiece holders.
Enables use of 1.25" Light Pollution filters, such as the Altair Premium 1.25" CLS filters.
Extra large 28mm prisms with top quality broadband multi-coatings on all optical surfaces.
High quality independently focusing 1.25" eyepiece holders - compression-fit with self centEring brass inserts.
Tough, light magnesium alloy casing.
Includes a carry handle with sight.
Extensible dew shields. Dew shield ID thread: M 116 x 1-6H, 6 mm depth.
Includes front dustcaps and rear dust plugs. Both eyepieces have dust caps.
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, or the new Single-Arm Binocular mount (code: BINOMOUNT1).

Included in delivery:
100mm binoculars with carry handle and tripod adapter
4 Dust Caps
Set 18mm UF 65 degrees = 30 x magnification
Double Carton Packing, rigid foam insert.

Technical specifications:
Dimensions 550 X 270 X 200mm
Weight 7.1kg
Interpupillary distance 54-75mm
Eyepiece Adapter: 31,7 mm / 1.25" Astro eyepiece compatible
Dewshield Dia. 116mm
Focal Length 550mm
Objective Lens Diameter 100mm
Objective angle of view: max. 2.8 Degree
100mm F5.5 Proprietary CDGM dual element objective lens with improved colour correction.
28mm Oversized K9 Prism Clear Aperture (field stop diameter: 25 mm).
Prism glass type: K9 equivalent to BAK4.
Broadband Hardcoat Multi-layer coatings on all surfaces.
Photo tripod thread: 1/4-20 and 3/8"

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 65-66° Apparent Field of View 2.2°
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

Reviews

  Very Good  Great value for money , there heavy so you must get the best tripod & mount you can, i went for the big U mount.  (20/06/2023) - uk