NASA | ISIM Goes into Huge Space Environment Simulator

The Integrated Science Instrument Module (ISIM), which is the heart of the Webb Telescope, is placed into the Space Environment Simulator (SES) at NASA's Goddard Space Flight Center for cryogenic testing. During this test, the ISIM is supporting the Mid-InfraRed Instument (MIRI) and the Fine Guidance SensorNear InfraRed Imager and Slitless Spectrograph (FGS/NIRISS).