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17 of 23 photos

NGC457 and NGC436

A pair of pretty open clusters in Cassiopeia, taken from my Creedmoor site on September 22, 2020. NGC457 (towards the right in the image), and the smaller NGC436 (left of image). NGC457 is about 7900 light years away and its age is estimated to be 21 million years. NGC436 is a little further away and a lot older, at 9,800 light years away and 85 million years old. NGC457 goes by the name of the Owl cluster, the Number 5 Cluster or the E.T. Cluster.
NGC457 and NGC436