| 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 |