Open Cluster M52 and Bubble Nebula: This open cluster is one of the richest among the many open clusters in Cassiopeia in the high northern sky and also among all Messier Open Clusters.The extent of the cluster is 22 LY  and the distance about 4500 LY. To the lower right there is a faint galactic emission nebula NGC 7635, also called Bubble Nebula.

Object Open Cluster M52 and Bubble Nebula
Category Open Clusters
Designation M 052
Constellation Cassiopeia
Optics TMB 130 f/6
Mount Astro-Physics 900 GTO
Camera QHY8/ALccd 6c
Exposure 10 x 5min, IDAS LPS filter, Maxim DL for image acquisition
Calibration No Dark- and Flat Frame
Guiding Meade DSI Pro II and TMB 80 as Guide Scope, Guiding Software: Maxim DL
Processing ImagesPlus, Neat Image, Photoshop
Location-Date Eningen, Germany - 14 July 2007
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