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  1. Updates to the MIRI Imager Flux Calibration Reference Files

    September 19, 2023

    As a result of continued analysis of calibration observations and improvements in code and algorithms, significant updates to the Imaging and Coronagraphic Imaging flux calibration reference files are now available.

    Line drawing of JWST on a background of the Cartwheel Galaxy observed by JWST using MIRI
  2. MIRI Imager Reduced Count Rate

    August 24, 2023

    Calibration data reveals a reduced count rate in the long-wavelength filters of the MIRI Imager.

    Stephen’s Quintet observed by JWST using MIRI
  3. MIRI MRS Reduced Count Rate Update

    May 25, 2023

    This update reports on a careful study of the impact the measured MIRI MRS decrease count rate has on science data, as well as on the upcoming pipeline mitigation.

    Cartwheel Galaxy observed by JWST using MIRI
  4. Seeing Through the Glare with JWST Coronagraphy

    September 17, 2018

    The coronagraphic capabilities provided by the James Webb Space Telescope (JWST) will reveal faint structures otherwise hidden by the glare of a bright point source.

    Image of MIRI field of view, showing its four coronagraphs.
  5. Two for the Price of One: MIRI Simultaneous Imaging

    November 29, 2017

    The MIRI imager and Medium-Resolution Spectrometer (MRS) can be operated simultaneously, resulting in more accurate construction of the MRS data cube and bonus observations of a nearby field.

    Illustration showing MIRI simultaneous imaging feature.


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The NASA James Webb Space Telescope, developed in partnership with ESA and CSA, is operated by AURA’s Space Telescope Science Institute.