The following key is used to define a MIDI setup:
ins.gris.name (PRISM or GRISM)
CALIBRATIONS:
-- day time calibrations: they are used only for HC puposes
-- night time calibrations:
  For the SCIPHOT mode, the KAPPA MATRIX (CAL_SP_KAP) is valid for the full night
  For both modes (HIGHSENS and SCIPHOT), the calibrator (CAL_SP_FRT or CAL_HS_FRT) is valid for -1.2 / +1.2 hour