Date of Obs. 24/04/2018 Starting time (UT) 03:30:50 Ending time (UT) 03:56:36 Number of images 500 Gband exposure time (ms) 8 Halpha exposure time (ms) 110 Location on disk (arcsec) -171.33 91.62 Gband Image Size (pixels) 904 904 Halpha Image Size (pixels) 856 856 Plate Scale (arcsec/pixel) 0.19 0.19 --------