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by mturmon 1345 days ago
Just to further your comment, according to this overview paper

  http://ircamera.as.arizona.edu/MIRI/paper8.pdf
they can control the MIRI focal plane array temperature to 10mK using some clever tricks with electronic components that can operate as heaters.

> "This temperature sensor performance supports controlling the temperature of the SCAs to 10 mK, peak-to-peak."