M51-22_300411-DSS_GR_Curv_Lev_Sat_NebCB_Forum

M51 36x5 min. lightframes (10x on April 22 en 26x on May 1), 24x5 min. darks, 20x 0.001 sec bias and 20x 0.002 sec flats with a laptop backlight.
Capture Nebulosity 2.3.0, Calibration, registration and stacking (Kappa-Sigma) in DSS
Color Balance in Neb 2.3 and post-processing in CS3 (Levels/Curves/Saturation/Gradient removal)