This image shows the cooling device for the Mid-Infrared Instrument, or MIRI, one of the James Webb Space Telescope's four instruments. This photo was taken after the cryocooler had completed testing, and was taken out of the test chamber in preparation for being placed into its shipping container.
The cooler was shipped to the Northrop Grumman Aerospace Systems facility in Redondo Beach, California, on May 26, 2016. There, the cooler will be attached to the body of the Webb telescope.