Date of Obs. 20/02/2018 Starting time (UT) 04:47:43 Ending time (UT) 05:00:00 Number of images 233 Gband exposure time (ms) 23 Halpha exposure time (ms) 200 Location on disk (arcsec) -5.64 -0.12 Gband Image Size (pixels) 904 904 Halpha Image Size (pixels) 856 856 Plate Scale (arcsec/pixel) 0.19 0.19 -------- Date of Obs. 20/02/2018 Starting time (UT) 05:00:03 Ending time (UT) 05:30:21 Number of images 367 Gband exposure time (ms) 23 Halpha exposure time (ms) 200 Location on disk (arcsec) 3.62 -0.12 Gband Image Size (pixels) 904 904 Halpha Image Size (pixels) 856 856 Plate Scale (arcsec/pixel) 0.19 0.19 --------