Ultra
10x50 ED Ultra
$399.95
USD
ED, WA, Soft Case, L Adaptor
Magnesium Alloy
100%
6.5°
114m
18
5.0mm
57-75mm
15m
7 in
3.5lbs
View Product
$1,050.00
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The new Oberwerk 25x100mm ED Ultra is the largest and highest-image-quality binocular we offer, short of the XL Series binocular telescopes. Like the XL Series, it has FK-61 ED (Extra-low Dispersion) glass objectives, which greatly-minimize chromatic aberration. In fact the view it provides is exactly the same as what you’d see with a BT-100XL-ED with the optional 22mm (25x) eyepieces ($2800). With the Ultra, you can’t change magnification, and it doesn’t have the 45-degree view- but it’s roughly a third of the cost! Of course it has all the features of the other Ultra models, including precise individual focus, robust floating-plate prism mounts, fully broadband multi-coated optics (all air-to-glass surfaces, including prisms), rubber-armored all-metal waterproof construction (nitrogen filled), braced and hinged objective tubes, and built-in mount. This binocular has a wide 2.63° FOV (66° AFOV), with excellent sharpness across the entire field. Includes objective covers, ocular caps, and our exclusive Heavy-Duty aluminum-frame case!
| FOV | 2.63° |
|---|---|
| Eye Relief | 17mm |
| Exit Pupil | 4.0mm |
| IPD Range | 57-75mm |
| Minimum Focus | 45m |
| Product Weight | 10 lbs. |
| Product Dimensions | L=18", W=10", H=4" |
| Magnification | 25x |
| Objective Size | 100mm |
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Scott Robertson (verified owner) –
Very pleased with the quality of the binoculars and the views they provide. I have a narrow IPD (61) with average inset facial features and the binoculars fit fine. For my preference the rubber on the eyecups could be softer, but they are not a deal breaker. I find the eye relief to be good, but I don’t wear glasses. The field is flat and colors true; CA has not been noticeable. I use these on a parallelogram mount in a zero gravity chair and absolutely enjoy long viewing sessions. The focus ratio is generous. I find it is easy to focus clearly and quickly. Also the binoculars stay focused well. My old binoculars would go out of focus easily when I put pressure on the eyecups. The Oberwerks hold their focus even under pressure. I highly recommend the 25X100 ED Ultra binoculars.
Shawn Moses (verified owner) –
I just gave these binoculars their first real test drive at Galena Summit, an 8500’ mountain pass in south central Idaho.
They have tight eye relief, and take a bit of getting used to. However, once the focus is dialed in, they are quite sharp.
They have a touch of false color, but it’s only evident on planets, the moon, and bright stars, which I don’t think are most people’s primary targets for giant binoculars. Star colors are not quite as vivid as you get in an apochromat, but they are neutral and quite pleasing.
They lose focus at the edge of the field. It was only noticeable on the Pleiades, by virtue of its large size and brightness. At this price point, I’m willing to accept this limitation.
That said, let me start to gush:
The Double Cluster is sheer magic: the cores of both clusters feature gorgeous groupings of faint stars that pop out with the immersive dimensionality that only binoculars can achieve.
Watching the starclouds of Sagittarius setting behind a mountain ridge, silhouetting stands of Engelmann spruce, was aesthetic bliss. Dark nebulae stand out magnificently. M 24’s nature as a relatively dust-free window deep into the Sagittarius Arm seemed obvious. The globular M 22 is resolved beautifully, and is astonishingly large. The Omega Nebula’s swan shape is quite bold, as are it outlying patches of nebulosity.
The dust lanes in the Scutum Star Cloud look like a system of branched river channels. M27’s dumbell shape and its faint ‘ears’ stood out well. The Eastern Veil Nebula reveals its full rainbow shape, and the Gulf of Mexico region of the North America Nebula is a bold direct vision object.
Particularly if you wear eyeglasses, the short eye relief might give you pause, but this is an excellent instrument, approaching the performance of much pricier units. It should give you countless hours of pleasurable skywatching.