NASA/ESA JWST Mid-Infrared Instrument (MIRI)

2004 - 2007

JWST Mid-Infrared Instrument (MIRI)Project overview

The James Webb Space Telescope (JWST) will be a large infrared telescope with a 6.5-meter primary mirror, due for launch in October 2018. The Webb will be the premier observatory of the next decade, serving thousands of astronomers worldwide. It will study every phase in the history of our Universe, ranging from the first luminous glows after the Big Bang, to the formation of solar systems capable of supporting life on planets like Earth, to the evolution of our own Solar System.

The Mid-Infrared Instrument (MIRI) is a cooled thermal-infrared imager (9 K) and medium resolution spectrometer (7 K) being developed for launch on the James Webb Space Telescope (JWST) by a NASA-led international consortium comprising the Jet Propulsion Laboratory, European partners sponsored by the European Space Agency, and an international science team. MIRI is one of three instruments on the JWST being designed to address many astrophysical topics, ranging from the understanding of the structure of the universe to the birth and formation of stars.

The University of Reading has been responsible for contributing to the instrument with the design and fabrication of long-wave pass dichroic beam splitters in the spectrometer subsystem (5-29 µm), together with a set of precision bandpass filters (13-29 µm), and coronagraphic filters (15.5 and 23 µm) for the wide-field imaging camera.

Delivered hardware

Description Filter Type Quantity Wavelength Region Substrate Material Dimensions
Dichroic Beamsplitters Longwave-pass edge filters 9 channels 5 - 29 µm Cadmium Telluride (CdTe) 21.0 mm Dia x 5.0 mm T
Imager Filters Narrow Bandpass filters 4 channels 13 - 29 µm

Cadmium Telluride (CdTe), Zinc Selenide (ZnSe)

24.4 mm Dia x 4.0 mm T
Coronagraphic Filters Longwave-pass edge filters 2 channels 15.5 - 23 µm Zinc Selenide (ZnSe) 24.4 mm Dia x 4.0 mm T




JWST's Mid-InfraRed Instrument (MIRI)

James Webb Space Telescope's Heart, the MIRI Instrument

NASA James Webb Space Telescope [playlist]

James Webb Space Telescope Significant Achievement Award

Dr Gary Hawkins and Mr Richard Sherwood have been presented with a certificate from the European Space Research and Technology Centre (ESTEC) for their extraordinary contributions to the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope (JWST) Observatory. The award is in recognition of their extraordinary contribution to the JWST mission.



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