WARNINGS
remove warnings
WARNING: FITSFixedWarning: RADECSYS= 'FK5 ' / WCS for this file the RADECSYS keyword is deprecated, use RADESYSa. [astropy.wcs.wcs] 2017-02-16 15:19:00,285 -- WARNING: FITSFixedWarning: RADECSYS= 'FK5 ' / WCS for this file the RADECSYS keyword is deprecated, use RADESYSa. WARNING: FITSFixedWarning: 'datfix' made the change 'Changed '30/07/90' to '1990-07-30''. [astropy.wcs.wcs] 2017-02-16 15:19:00,287 -- WARNING: FITSFixedWarning: 'datfix' made the change 'Changed '30/07/90' to '1990-07-30''.