The FIFI-LS instrument
The FIFI-LS instrument
The image shows the rectangular aluminium cryostat of the FIFI-LS instrument mounted on the telescope's blue supporting structure. The cryostat is filled with liquid nitrogen and liquid helium for cooling the optical elements and detectors to the required low temperatures. The dark-coloured boxes in front of and below the cryostat and the obliquely arranged 'instrument rack' above are the electronic boxes for control of FIFI-LS and data processing.
