Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  NGC 457  ·  The star φCas
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NGC 457 - Owl Cluster, Thomas Richter
NGC 457 - Owl Cluster
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NGC 457 - Owl Cluster

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Description

NGC 457 (also known as the Owl Cluster) is an open star cluster in the constellation Cassiopeia. It was discovered by William Herschel in 1787 and lies over 7900 light years away from the Sun. It has an estimated age of 21 million years. Two bright stars, magnitude 5 Phi-1 Cassiopeiae and magnitude 7 Phi-2 Cassiopeiae can be imagined as eyes. The cluster features a rich field of about 150 stars of magnitudes 12-15.

Just a short open star cluster because of moonlight.

Original: full version

Ver. B : crop version

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NGC 457 - Owl Cluster, Thomas Richter

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Star Clusters