Zhumell's 25x100 binoculars capture lots of light
These impressive binoculars provide brilliant, high-power views of celestial objects.
February 24, 2011
Over the past year or so, I’ve seen a lot of buzz in online astronomy forums about the 25x100 Tachyon binoculars by Zhumell. These monsters boast a pair of 3.9-inch (100 millimeters) objective lenses, fully multicoated optics, and BaK-4 prisms — all for an average street price of $230. Having paid more than twice that for my premium 16x70 binoculars, I wondered how good they could be.
Photo by Astronomy: William Zuback
I found out when my wife, Wendy, gave them to me for my birthday. After unwrapping the ribboned present, I was initially struck by Zhumell’s care in packaging. A foam-lined hard case cradles the binoculars and holds them snugly during transport. I later learned that Zhumell’s careful packaging keeps the binoculars in perfect collimation.
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