Messier 13 - Globular cluster in Hercules

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Messier 13 - click for hi resolution image
Object: Messier 13 - globular cluster, Hercules
Coordinates: RA: 16h 41m 42s DE: +36° 28' 00"
Location, date: Bělečko (01.04.2009), Czech Republic
Telescope: Pentax SDHF
Focal lenght, speed: 500 mm, f/6.67
Camera: Canon EOS 350D
Senzor: 8.0 MPix APS-C, 22.2 x 14.8 mm, pixel 6.4 um
Expozure: 30x120 sec, ISO 800
Filter: -
Mount: Celestron CG5-Advanced GT
Pointer: Sky-Watcher, 75/500 mm