Mapping of FITS keywords into MIDAS descriptors

The Data Organizer expects as initial input a list of MIDAS descriptors. These descriptors are the result of a translation of the FITS keywords following a scheme described in Vol. A, chapter 7 and automatically performed by MIDAS command INTAPE/FITS. For instance, the FITS keyword 'OBJECT' is translated into the MIDAS descriptor 'IDENT', the contents of the keyword 'EXPTIME' is stored into the 7th element of the descriptor 'O_TIME' and the ESO hierarchical keyword 'HIERARCH ESO GEN EXPO TYPE' is translated into the descriptor '_EGE_TYPE'