As long as high resolution or long-range observation is to be achieved using infrared detection, it will be necessary to cool down the detector in order to reach the best sensitivity and dynamics. This paper describes different cooling solutions currently used for this purpose discussing advantages and drawbacks. Some guideline is given for cooler choice and selection. The focus is on rotary Stirling coolers illustrated by description of the RMs1 cooler dedicated to high operating temperature size, weight, and power infrared detectors. A user case study is presented with cooler power consumption and cool down time of the RMs1 cooler when integrated in IRnova’s Oden MW IDDCAs.