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ngc 891

            


 
Object:             ngc891 in  Andromeda
Telescope:      
COMELLAS  telescope  (250 f/8.3 Newton). Lumicon 1.8x  multiplier/corrector.
Camera:           Artemis ART4021.   Astronomik IR & RGB filters.
Exposures:       L : 153 x 10'    (25:30 total) 
                         R:     15 x 5'    (  1:15 )
                         G:     14 x 5'    (  1:10 )
                         B:     12 x 6'    (  1:12 )
Resolution:       0.72"/pixel 
Guiding:            Moravian G0 on Off-Axis Guider
Date:                 February  2018
Site:                  Sagan Observatory  Las Rozas  (Spain)     - mag 4.5 suburban skies -
Processing:
Bias, Darks & Flat calibration
Deconvolution
Histogram & Curves adjustments
LRGB combining



Software:
PixInSight