Stefan Clarke


  
Scope: GSO 6" f/9 Ritchey-Chrétien, CG5 Synscan, guiding C80ED-R, SPC900NC
Camera: Canon 1000D (Unmodded)
Exposures: 1h 40min (20 x 300s subs, dark and bias frames, no flats, ISO400)
Acquisition: APT 1.0.6, PHD
Processing: DSS, PS CS3
Comments:
  
Object: M51
Author: Stefan Clarke
Location/Date: 7 & 8 March 2011, UK
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