Equipment and other photo info:
Picture taken on July 16th, 2010.
Location: Petrova gora, Croatia, Europe
Celestron C10N @ f/4.7, Baader MPCC, QHY8, TS OAG9mm, QHY5 guiding camera
Exposure time: 15x2min
Mount: EQ6 Vis upgreded to EQ6 SynScan

Processing software: DeepSkyStacker, PixInsight 1.0, Photoshop CS2

Object info:
Messier 13 (M13, NGC 6205), also called the ‘Great globular cluster in Hercules’, is one of the most prominent and best known globulars of the Northern celestial hemisphere.

More information about this object at: http://seds.org/messier//m/m013.html