(ISIM). It is connected to the ISIM mechanically with a system of kinematic mounts in the structural form of struts. There are thermal straps connecting the NIRCam optical bench assembly to theISIM structure and to thermal radiators. It is designed to operate between 32 K and 37 K. The Focal Plane Electronics operate at 290 K.

NIRCam should be able to observe objects as faint as magnitude +29 with a 10,000-second exposure (about 2.8 hours). It makes these observations in light from 0.6 to 5 um (600 to 5000 nm)