The following keys are used to define a AMBER CAL4CAL setup: INS.GRAT1.NAME: PRISM, GMR (medium-resolution), GHR (high-resolution) OCS.OBS.SPECCONF: spectral configuration (Low_JHK, Medium_K_1_2.1 for ex.)
The central wavelength INS.GRAT1.WLEN is also checked to associate the P2VM to the CALIB_FRINGE
CALIBRATIONS for CALIBRATIONS:
A P2VM (3P2V or 2P2V) has to be taken at most 6 hours (.25 days) before the calibrator OB,