M 51
Image data-aquisition by Torsten Grossmann, image-processing by stargazer-observatory.
Date: 21st of April 2009 - seeing 7/10; transp. 8/10
Scope: 7" TMB Apo f/7
CCD: Sbig ST 4020. LRGB
L=8x10 min (1x1 bin), RGB, each 5x4min (2x2bin)
Processing: postprocess. in CCD Stack, Registax, PS CS4 and Pix InSight LE.
