Messier 81, 82 and NGC 3077 - Group of galaxies in Ursa Major

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M81, M82, NGC3077 - Group of galaxies in Ursa Major - click for hi resolution image
Object: M81, M82, NGC3077 - Group of galaxies in Ursa Major
Coordinates:
Location, date: Jedlová v Orlických horách (20.4.2009), Czech Republic
Telescope: Pentax 75 SDHF
Focal lenght, speed: 500 mm, f/6.67
Camera: Canon EOS 300D, modified
Senzor: 6.3 MPix APS-C, 22.7 x 15.1 mm, pixel 7.4 um
Expozure: 15x640 sec, ISO 800
Filter:
Mount: Celestron CG5-Advanced
Pointer: SkyWatcher 75/500 mm