Date of Obs. 21/12/2020 Starting time (UT) 04:22:11 Ending time (UT) 04:48:34 Number of images 500 Gband exposure time (ms) 11 Halpha exposure time (ms) 150 Location on disk (arcsec) -883.25 -268.02 Gband Image Size (pixels) 1000 1000 Halpha Image Size (pixels) 900 900 Plate Scale (arcsec/pixel) 0.19 0.19 --------