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Altair 100mm 45 Degree Giant Binoculars

Altair 100mm 45 Degree Giant Binoculars

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

Our standard delivery charge for most of the UK is £2.95. All orders are shipped promptly, lower value items are sent Royal Mail 1st class and higher value or larger goods are shipped via reputable courier. All goods are shipped fully insured with FEDEX, UPS, DPD and Royal Mail, we do not use budget courier services, please note we can only ship to UK mainland addresses. We are not able to ship to forwarding agents or PO boxes.

Our Order Lookup system (see very top of each page for the icon and link) updates the order status in real time for you - simply by entering your order number and postcode..

We hold stock, dozens of telescopes and literally thousands of accessories that we ship out each business day, normally orders received before lunch are shipped that business day. We also direct ship from our UK suppliers, this means we have access to thousands of products that can ship fast to our customers.

Deliveries to UK mainland addresses are all shipped with fully insured premium services for £2.95, *some exceptions apply including many AB, FK, HS, IV, KA, KW, PA, PH, ZE postcodes. We will quote delivery charges to these areas where applicable prior to shipping (this does not normally affect lower value items shipped by Royal Mail).

You must inform us within one working day if the goods are lost or damaged in transit so that we can make a prompt claim against the delivery company and correct the problem. Please ensure all address details are accurate, we cannot be responsible for failed deliveries or losses arising from incorrect delivery addresses.

You agree that proof of delivery supplied by our delivery company is sufficient evidence to establish that goods have been received.

If your product is sent by Courier they will attempt delivery twice and a signature will be required. If they are unable to deliver because you are not available and after 5 days you have not contacted them to re-arrange. the goods will be returned to us and the return delivery costs may be charged to you

Altair 100mm 45 Degree Giant Binoculars

MPN: BINO100-45





Price: 1,299.00


For astronomy, high power nature viewing, or coastal observation, we cannot find a better price/performance ratio 100mm binocular. The difference in light grasp compared to 70 or 80mm binoculars is immediately visible, as is the higher resolution. In fact, these lenses outperform most spotting scopes and achromatic doublet telescopes of similar aperture, showing details which just aren't resolved with smaller apertures.

Complete with a pair of 18mm ultra flat eyepieces, you can use pairs of any standard 1.25" eyepieces on this model



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