James Webb Space Telescope Components Cooling to Deep Space Temperature Written 25 April 2022


Artist’s concept of the James Webb Space Telescope in space with its major elements fully deployed. | Credit: GSFC/CIL/Adriana Manrique Gutierrez; NASA

SPACE reported that there is no timeline as to when all the James Webb Space Telescope’s “observatory components will meet their operating temperatures.” Webb Deputy Senior Project Scientist Jonathan Gardner said Thursday the telescope’s mirrors “are not quite there yet.” All “of the observatory’s instruments are at their final temperature, including the Mid-Infrared Instrument (MIRI), which is super-sensitive to heat and gets some help from a cryocooler to stay around 7 degrees Kelvin (minus 447 degrees Fahrenheit or minus 266 degrees Celsius).”
Full Story (SPACE)