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
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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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