The following CRIRES calibrations are measured daily independent from
the settings used during the night:
DARKs: a set of 3 darks for DIT = 1 and DIT = 300 sec
FLATs: one flat-field for each for the reference wavelengths 1090.4,
3218.6, and 4092.9 nm;
two flats with 2199.1 nm, one with the halogen lamp and one with the IR emitter
WAVEs: a ThAr exposure for 1090.4 nm and a N2O exposure at 4092.9
nm.