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NASA's James Webb Space Telescope Work on the ISIM Electronics Compartment Here a tech is finishing up flight harnesses on the James Webb Space Telescope's Integrated Science Instrument Module (ISIM) Electronics Compartment (IEC) in the cleanroom at NASA Goddard.

The IEC houses all of the electronics responsible for control, data handling, and telemetry for the Webb telescope's scientific instruments.

The ISIM itself is one-of-a-kind living framework that provides electrical power, computing resources, cooling capability as well as extreme structural stability to the Webb telescope. It is a state-of-the-art bonded graphite-epoxy composite attached to the backside of Webb’s telescope structure.

The ISIM also contains the four science instruments that will record images and spectra of astronomical objects whose light will be collected by the giant optics of Webb’s telescope element.