NASA's James Webb Space Telescope

Mid-Infrared Instrument (MIRI)

The Mid-Infrared Instrument (MIRI) provides JWST observers with coverage of mid-infrared wavelengths from 4.9 to 28.8 μm. Imaging can be obtained with a broad range of narrow, medium, and broad filters. Spectroscopy can be obtained with a low spectral resolution mode that includes both slitted and slitless options, or with a medium resolution integral field unit. MIRI also contains both Lyot and 4-quadrant phase mask coronagraphs that are optimized to the mid-infrared spectral region. 

  For detailed instrument information, please consult the MIRI JWST User Documentation (JDox). 

MIRI was developed through a collaboration between the European Consortium and the Jet Propulsion Laboratory (JPL). The European MIRI Principal Investigator is Gillian Wright (UK Astronomy Technology Centre), and the U.S. Principal Investigator is George Rieke (University of Arizona). The MIRI Project Scientists are Alistair Glasse at UKATC and Michael Ressler at JPL.

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Simulated MIRI MRS observation illustrating an uncalibrated detector image (upper left panel) and the corresponding three-dimensional data cube (upper right panel) and extracted one-dimensional spectrum (lower panel).
Simulated MIRI MRS observation illustrating an uncalibrated detector image (upper left panel) and the corresponding three-dimensional data cube (upper right panel) and extracted one-dimensional spectrum (lower panel).