M23 (NGC 6494)
Open cluster in Sagittarius
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One of Messier's original discoveries, this cluster is about 2,150 light years away, 220-300 million years old, with approx. 150 member stars. Image credit: N.A.Sharp, REU program/NOAO/AURA/NSF
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Image credit: Fernando Fernández, www.astrocosmos.es
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Messier 23
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Messier 23
How to find M23 in the night sky -
Messier Monday: A Cluster That Stands Out From The Galaxy, M23
Many pictures of M23
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