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Messier 51

            


 
Object:             M51, face-on galaxy in Canes Venatici
Telescope:      
Astrograph 400 f/4 Newton  (APM 1.5x multiplier/corrector up to 2440mm fl). Paramount ME.
Camera:           ccd Artemis ART4021.   Astronomik LRGB filters. Baader Halpha.
Exposures:       L :  105 x 10'    (17:30 ) 
                         R:    36 x 10'    (  6:00 ) 
                         G:    36 x 10'    (  6:00 ) 
                         B:    36 x 10'    (  6:00 )
                 Halpha:   35 x 15'    (  8:45 )
Resolution:       0.42"/pixel  (drizzle resampled)
Guiding:            Moravian G0 on Off-Axis Guider
Date:                 February - March  2019
Site:                  Sagan Observatory  Las Rozas  (Spain)     - mag 4.5 suburban skies -
Processing:
Bias, Darks & Flat calibration
Drizzle integration
DBE
Deconvolution
Histogram & Curves adjustments
HDRMT
L(R-H)GB combining
Noise reduction: ACDNR

Software:
PixInSight