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HDW 2 - Sharpless 2-200
(click on the image for the highest resolution)

            


 
Object:             HDW 2 (Hartl-Dengel-Weinberger 2),  planetary nebula in Cassiopeia.
Telescope:      
Astrograph 400 f/4 Newton  (3" 1.15x coma corrector up to 1850mm fl). Paramount ME.
Camera:           Artemis ART4021.   Astronomik LRGB & Baader NB filters.
Exposures: Halpha : 50 x 15'     (12:30 ) 
                         Oiii : 72 x 15'     (18:00 )
                       RGB: 16 x   3'     (  0:48 )  each filter
Resolution:       0.6"/pixel .   Oiii FWHM after integration: 2.03" 
Guiding:            Moravian G0 on Off-Axis Guider
Date:                 August - December  2019
Site:                  Sagan Observatory  Las Rozas  (Spain)     - mag 4.5 suburban skies -
Processing:
Bias, Dark & Flat calibration
DBE
Histogram & Curves adjustments
HDRMT
LRGB combining - L(Ha,Oiii)  nebula color (Ha,Oiii),  stars color (RGB)
Noise reduction: ACDNR

Software:
PixInSight