| 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 |