| Object: IC 239, face-on spiral galaxy in Andromeda Telescope: Astrograph 400 f/4 Newton (APM 1.5x multiplier/corrector up to 2440mm fl). Paramount ME. Camera: Artemis ART4021. Astronomik LRGB filters. Exposures: L : 150 x 10' (25:00 ) R: 14 x 10' ( 2:20 ) G: 14 x 10' ( 2:20 ) B: 14 x 10' ( 2:20 ) Resolution: 0.42"/pixel (drizzle resampled) Guiding: Moravian G0 on Off-Axis Guider Date: December 2017 - December 2018 Site: Sagan Observatory Las Rozas (Spain) - mag 4.5 suburban skies - |
Processing: Bias, Darks & Flat calibration Drizzle integration DBE Deconvolution Histogram & Curves adjustments HDRMT LocalHistogramEqualitation MultiscaleLinearTransform LRGB combining Noise reduction: ACDNR Software: PixInSight |