Near-Infrared Spectrograph, provided by ESA with some elements provided by NASA's Goddard Space Flight Center. A wide field (3.4' x 3.6') multi-object near- infrared spectrometer covering wavelengths 0.6µm - 5 µm at spectral resolutions of R~100, R~1000 and R~2700.
NIRSpec. Credit: EADS Astrium GmbH
Mid-Infrared Instrument, provided by a partnership composed of ESA, a consortium of nationally funded European institutes, NASA's Jet Propulsion Laboratory, and NASA's Goddard Space Flight Center (GSFC) A combined mid-infrared camera (1.3' x 1.7') and spectrograph (R~100 and R~3000) covering wavelengths from 5 µm to 28.3 µm. It also includes a coronagraph.
MIRI. Credit: STFC/RAL Space
Near-Infrared Camera, provided by the University of Arizona. A two-channel wide field (2.2' x 4.4') near-infrared camera covering wavelengths 0.6 µm - 5 µm with a large selection of filters. NIRCam will also provide key measurements for the in-orbit adjustment of the shape of JWST's primary mirror segments.
NIRCam. Credit: NASA/Chris Gunn
Fine Guidance System/Near-InfraRed Imager and Slitless Spectrograph, provided by the Canadian Space Agency. NIRISS is a wide-field (2.2' x 2.2') imager capable of 1.0 µm - 2.5 µm slitless spectroscopy. It also includes a spectroscopic observing mode optimized for exoplanet spectroscopy.
FGS/NIRISS. Credit: COM DEV Canada