JWST's Mid-Infrared Instrument (MIRI) has 4 observing modes: imaging, coronagraphic imaging, low-resolution spectroscopy, and medium-resolution spectroscopy.

See also: MIRI APT Templates

The JWST Mid-Infrared Instrument (MIRI) provides imaging and spectroscopic observing modes from ~5 to 27.9 μm that correspond to templates in the Astronomer's Proposal Tool (APT):

• Imaging—field of view is up to 74" × 113" with filters ranging from 5.6 to 25.5 μm. 
• Low-resolution spectroscopy—slitted and slitless modes are available from 5 to 14 μm. Slitless modes are currently only available for time-series observations (TSOs).
• Medium-resolution spectroscopy—integral field unit (IFU) spectroscopy is available from 4.9 to 27.9 μm.
• Coronagraphic imaging—four individual coronagraphs are available, one of which is based on the classic design of Lyot and three of which are based on 4-quadrant phase masks (4QPM).
• MIRI wide field slitless spectroscopy—combines the large field offered by the MIRI imager (74" × 113" field of view) with the double prism P750L to obtain 5–14 µm, low-resolution (R ~ 100) spectra of multiple targets in a single observation. 

Table 1. Properties of MIRI observing modes

Additional information about MIRI observing modes can be found in these articles: