Field                   Description
-----                   -----------

FILENAME                File name ([1,2,3]rYYMMDD.fts) 
DATE_OBS                Date/time (UTC/ECS) of start of
                            exposure (at spacecraft)
CAMERA                  Camera Number (0=C1..2=C3)
EXPTIME                 Computed exposure time
FILTER                  Filter wheel position (0..4)
NAXIS1                  Number of columns in image
NAXIS2                  Number of rows in image
DISKPATH                Full disk path of file