| Object: Messier 44. Open cluster in Cancer Telescope: Sky-Watcher Esprit 80 triplet Apo & flattener (f/5 - 400mm). Camera: DSLR Canon 6D. Original IR filter replaced (Astrodon Inside). Exposures: 11x 15' , 4x20" (2:45 h) Mount: Sky-Watcher AZ-EQ5 Guiding: Moravian G1-2000 ccd on 50mm finder Date: December 2019 Site: Observatorio de La Sagra Granada (Spain) |
Processing: Bias, Darks & Flat calibration Sigma combining Dynamic Background Extraction Photometric Color Calibration Masked stretch Curves and Histogram adjustments Software: PixInSight |