The cooler (Figure 2-25) maintains a cryogenic environment for the IR
detector, which is mated to the coldfinger cooling surface.
cooler is a Stirling-cycle cryogenic refrigerator capable of
maintaining a temperature of approximately 80 degrees Kelvin (K).
This low temperature is necessary for the proper operation of the
mercury cadmium telluride (HgCdTe) IR detector array.
operating on +16.8 VDC, drives the cooler. The motor drives a piston
and regenerator to achieve and maintain the operating temperature.