GREAT being mounted on SOFIA
GREAT being mounted on SOFIA
Front view of the German Receiver for Astronomy at Terahertz Frequencies, GREAT on its transport cart. The two cryostats host sensitive Hot Electron Bolometer (HEB) detectors for terahertz radiation. The operating temperature of these detectors is -269°C (4 Kelvin). The frontal plate while it was being mounted on the telescope flange (B/W image).
