org/sqm_twilight.htm The brightness (SQM) value of the twilight sky NSSKY planetarium program Python 3 source code illumination of twilight luxes from sun altitude...
skiprows=3) print (df) sun sepression angle depression=np.array(df.iloc[:, 0]) sky brightness v, b , r band log_b=np.array(df.iloc[:, 1]) log_v=np.array(df...