NGC 457 The Owl and NGC 436 Clusters (Jim Raskett)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 34 Cas · 34 phi Cas · HD236697 · HD7902 · HD8159 · NGC 436 · NGC 457 · Owl Cluster · The star φ Cas

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NGC 457 The Owl and NGC 436 Clusters

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NGC 457 The Owl and NGC 436 Clusters

From Wikipedia:
It lies over 7,900 light years away from the Sun. It has an estimated age of 21 million years. The cluster is sometimes referred by amateur astronomers as the Owl Cluster[4] or the E.T. Cluster (due to its resemblance to the movie character). Two bright stars Phi Cassiopeiae (magnitude 5 and spectral type F0) and HD 7902 (magnitude 7) can be imagined as eyes. It is not yet clear if Phi Cassiopeiae is a member of the cluster, and if it is, then it would be one of the brightest stars known, surpassing Rigel in luminosity. For comparison, the Sun at the same distance as Phi Cassiopeiae would shine at just 17.3 magnitude. The next brightest star is the red supergiant variable star V466 Cassiopeiae. The cluster features a rich field of about 150 stars of magnitude 9-13. About 60 stars have been identified as true members of the cluster.

Another star cluster. I love these things!

Comments welcome.

Jim

Original
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C

B

Description: Inverted_SCNR

Uploaded: ...

C

Description: Used some CA reduction on the brighter blue stars. Slight improvement.

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	8856595
PixInsight job	DAWY95BZAWRA46ZBDDYMBNJW9MC4NRIO
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	01h18m33s.55
RA (top/left)	01h22m45s.27
RA (top/right)	01h22m51s.11
RA (bottom/right)	01h14m14s.66
RA (bottom/left)	01h14m24s.70

Dec (center)	+58°26′49″.7
Dec (top/left)	+57°53′26″.8
Dec (top/right)	+58°59′57″.9
Dec (bottom/right)	+58°59′36″.8
Dec (bottom/left)	+57°53′09″.6

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NGC 457 The Owl and NGC 436 Clusters

NGC 457 The Owl and NGC 436 Clusters

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NGC 457 The Owl and NGC 436 Clusters

NGC 457 The Owl and NGC 436 Clusters

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