VISIR has two DRS, former Boeing, 256 x 256 BIB detectors, one for imaging and one for spectroscopy. Their operating temperature is around 7 K. We monitor the temperature by plotting it as a function of time for each detector.

TRENDING - TEMPERATURE OF THE IMAGING DETECTOR

This figure plots temperature of the imaging detector (written in the keyword INS.SENS30.VAL) only when the imager is used (i.e. in the "IMG" instrument mode).