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The
Bubble Nebula (NGC 7635) and the open cluser M52 is a classic pair of
objects on the border between Cepheus and Cassiopeia. The field is rich
in other objects, such as the large red nebula encircling the bubble,
named Sh2-162, the dark nebula on the top-right of the bubble is LDN
1230, the faint and small nebula on the right of the bubble is Sh2-159,
the large and faint red nebula on the top-right border is LBN 547 and
Sh2-161. Curiously the relatively bright red nebula near the right
border seems not to have a proper catalog number, and is part of the
larger Sh2-161. The small yellow nebula near the lower border (a little
toward the right) is GN 23.15.3. The dark nebulas near the upper-right
corner are LDN 1228 and 1229.
