Red Variables in the Perseus Double Cluster

These clusters are young and most of the stars tend to be blue or
white in color. However note the reddish-orange stars scattered
throughout the clusters. These are some of the most massive stars
that have evolved into red-giant stars. These stars will tend to be
long period variable stars and are easy to identify in this image.

http://www.martin-nicholson.info/perseus/fzper.htm

Martin Nicholson, Daventry, England.
http://www.martin-nicholson.info/1/1a.htm
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