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Monday, May 19, 2008

Open cluster for binocular

The sky cleared, the other night, around midnight. Since I couldn't seem to fall asleep, anyway, I grabbed my Nikon Astroluxe 10x70 and did some exploring. Ophiuchus was up high enough, at last, to do some observing, so I started, there. This constellation, of course, is known to binocular astronomers for its abundance of globular clusters, most of which are visible under a good sky with any average astronomy binocular. On the other hand, when you have only a mag 3 sky, on a good night, most of those stellar treasures are a real challenge, even in a giant binocular. There is, however, a rather nice open cluster for any binocular in IC4665. Even with severe light pollution, this is an easy object, as well as a nice object, in any astronomy binocular - well worth a midnight step outside to see.
 
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