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Old December 21st 11, 08:25 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: Open cluster IC 166

IC 166 is an open cluster in Cassiopeia. It is about 10,750 light years
from us by one paper I found. The WEBDA puts it at 13,000 light-years.
Pinning down an open cluster's distance is still beyond the science in
most cases. It's age is estimated to be about 1.32 +/- 0.43 billion
years. Wide field images show it is seen at the edge of a weak dark
nebula so stars are likely reddened. It's age plus the dust likely
account for the rather red color of most of the stars in the cluster.

14" LX200R @ f/10, L=4x10' RGB=2x10x3, STL-11000XM, Paramount ME

Rick
--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

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