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Consider carefully before buying this
on February 25, 2013
I was swayed by the low price and many good reviews here, which caused me to ignore the advice of astronomy experts which were pointing me to better-quality options from Oberwerk, Orion, and even Zhumell.
If you are lucky, you might get a good pair of these that stays in collimation for awhile. If you are lucky, you might get a good pair of these that allow you to bring both tubes in focus at the same time. If you are lucky, you might get a pair of these that doesn't have horribly horrible chromatic aberration in one tube. I wasn't lucky. I sent mine back. I should have listened to the experts. I bought a Zhumell 25x100 instead, which is significantly better than this in *every* way, except that it cost and weighs twice as much. But it works.
Update: About nine months in with the Zhumell 25x100 referenced above, it fell victim to the same/similar miscollimation issues I had with the Celestron. I showed up at a star party with them (transported in the included foam-lined aluminum case, no less), set them up and couldn't merge the images. Very disappointing. My conclusion is that the prism assemblies on these entry-level giant binoculars are just not up to the task long-term. Either learn to adjust them yourself, or triple your budget to get something with better construction (Oberwerk Deluxe III, Ultra, or Orion Resolux). I now have the Oberwerk Deluxe III 20x80 and the Orion Resolux 15x70. Both have very good optics and a better reputation for sturdy construction. We shall see...