Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  Bubble Nebula  ·  M 52  ·  NGC 7510  ·  NGC 7538  ·  NGC 7635  ·  NGC 7654  ·  The star 2 Cas  ·  The star 4 Cas
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Cassiopeia OB2 region (SH2-157, Sh2-159, Sh2-161, NGC7538, NGC7635, NGC7510, NGC7564), Giulio Ercolani
Cassiopeia OB2 region (SH2-157, Sh2-159, Sh2-161, NGC7538, NGC7635, NGC7510, NGC7564)
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Cassiopeia OB2 region (SH2-157, Sh2-159, Sh2-161, NGC7538, NGC7635, NGC7510, NGC7564)

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Cassiopeia OB2 region (SH2-157, Sh2-159, Sh2-161, NGC7538, NGC7635, NGC7510, NGC7564), Giulio Ercolani
Cassiopeia OB2 region (SH2-157, Sh2-159, Sh2-161, NGC7538, NGC7635, NGC7510, NGC7564)
Powered byPixInsight

Cassiopeia OB2 region (SH2-157, Sh2-159, Sh2-161, NGC7538, NGC7635, NGC7510, NGC7564)

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Description

This area of the Cassiopeia constellation, called Cassiopeia OB2, includes some extensive and bright H II regions, such as the large SH2-157, a faint but extensive emission nebula known as the Lobster Nebula (right) and Sh2-161 (left).
We also find two magnificent open clusters, the golden NGC7510, and NGC7564 also known by the acronym M52, the small but flashy emission nebula NGC7538, the famous Bubble Nebula NGC7635...

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