ANDROMEDA
AQUARIUS
AQUILA
ARIES
AURIGA
BOOTES
CAMELOPARDALIS
CANCER
CANES VENATICI
CANIS MAJOR
CANIS MINOR
CAPRICORNUS
CASSIOPEIA
CENTAURUS
CEPHEUS
CETUS
COMA BERENICES
CORONA BOREALIS
CORVUS
CRATER
CRUX
CYGNUS
DELPHINUS
DRACO
EQUULEUS
ERIDANUS
GEMINI
HERCULES
HYDRA
LACERTA
LEO
LEO MINOR
LEPUS
LIBRA
LYNX
LYRA
MONOCEROS
OPHIUCHUS
ORION
PEGASUS
PERSEUS
PISCES
SAGITTA
SAGITTARIUS
SCORPIUS
SCUTUM
SERPENS
SEXTANS
TAURUS
URSA MAJOR
URSA MINOR
VIRGO
VULPECULA
Next to the Big Dipper, the most recognizable grouping of stars in the northern sky is the slightly squashed "W" (or "M") of Cassiopeia. Nestled securely in the heart of the Milky Way, Cassiopeia is the queen who started a lot of trouble by boasting about her daughter Andromeda's beauty. Read all about it in the Andromeda Story.
Like most queens, Cassiopeia is surrounded by jewels. In this case the jewels are star clusters, nebulae and galaxies. On her left hand, like a sparkling setting of diamonds, is the open star cluster M103, and on her right, the cluster M52.
In the photo below M52 can be seen in the lower left, and to the upper right, seen through a red nebula filter, is NGC7635, also known as the Bubble Nebula, for the distinctive bubble of expanding gas in its centre.
Below is a close-up photo of M103.
