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|Optical Design||Porro Prism|
|Optical Coatings||Broadband Hardcoat Multi-layer coatings on all surfaces|
|Objective Lens Diameter||100mm|
|Field of View||38.4@1000m|
|What are you going to look at with your binoculars?||Distant Object Using a Tripod|
|What size do you want your binoculars to be?||Tripod mounted|
|WaterProof & Nitrogen Filled||WaterProof (limited)|
|Interpupillary Distance (mm)||54-75mm|
Imagine the light gathering power of two 4" refractors - one for each eye! Use your favourite 1.25" astro eyepieces for lunar and deepsky observation or even light pollution 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.
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. The ultimated solution would be the iOptron AZ PRO mount. Our optional single-arm binocular mount is also available. (Code: BINOMOUNT1).
Included in delivery:
Performance with included 18mm Ultraflat Eyepieces:
Staff comments - a mini-review from Nick, who has been "playing" with a pair of giant binoculars for a while now: "Imagine having two rich-field 100mm refractors - one for each eye (that's a 50% gain on bino-viewers), and that's what you're getting. Color correction is very good, in fact, other vendors describe these very well corrected Achromats as "Semi-APO". They deliver a very sharp image of the moon, star clusters and even sunspots are very dark (with twin solar filters!). The moon is great too, appearing 3 dimensional with lots of suface detail visible. Saturns rings can easily be seen at 30x with the included 18mm Ultraflat eyepieces. I tried a pair of Altair 1.25" CLS Light Pollution filters (which screw in to the eyepiece barrels like any standard 1.25" filter), and the extra light grasp gained by using two eyes gives a marked improvement on nebulae, even on the outskirts of Norwich city. The Orion Nebula takes on a 3-dimensional appearance for example, and the difference using both eyes compared to a 4" refractor is immediate. Taking them to the Norfolk coast was very enjoyable. I could see every droplet of water on a seal's whiskers right out in the sea at Winterton beach. The wind turbines and ships passing by showed plenty of detail. It's like having two telescopes side-by-side, one for each eye. The oversize 28mm prisms deliver a bright even field, giving deepsky objects some "pop". The included high quality 18mm wide angle flat field eyepieces yield 30x magnification which is just the right size for an exit pupil with or without glasses, and the field is very flat and sharp, right out to 97% (the edge being 100%). Even small lunar craters stay in focus right to the field-edge. Bottom line, no other giant binoculars I've tried in this class will give this edge of field performance and these are a big step up from say 70 or 80mm aperture. I mounted mine using the L-Bracket and an Altair Sabre mount which gave a nice smooth slewing experience. They will easily fit on the iOptron AZ PRO (with L-Bracket) for a top quality observing experience. Nick, Altair."
£ 355.50 -10% £ 395.00