Technicians fill SOFIA’s instrument with liquid nitrogen and helium to keep the detectors cold.
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Technicians fill SOFIA’s instrument with liquid nitrogen and helium to keep the detectors cold. The now retired instrument was called the First Light Infrared Test Experiment Camera, or FLITECAM. When SOFIA lands after each flight its instruments can be exchanged, serviced or upgraded to harness new technologies. Left: Chris Koerber, right unknownNASA/Carla Thomas