Check out these instruments images:
Integrated Science Instrument Module (ISIM) Structure
Image by NASA Webb Telescope
Engineers unload The James Webb Space Telescope ISIM structure from its container after it arrived at NASA Goddard Space Flight Center in Greenbelt, MD.
Credit: NASA, Chris Gunn
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Integrated Science Instrument Module (ISIM) Structure
Image by NASA Webb Telescope
The ISIM in the Helium Shroud, where it underwent cryogenic test. The NIRSpec Mass Simulator is attached to its left side.
Credit: Chris Gunn/NASA