New and improved calibrations are now available for both the MIRI Low-Resolution Spectrometer (LRS) fixed-slit and slitless modes.
The photometric calibration reference files for the Medium Resolution Spectrometer have been updated to reflect a more comprehensive analysis using data obtained over the course of JWST Cycles 1 and 2.
A zero exclusive access period now applies to data from MIRI observations of coronagraphic PSF reference star-associated background targets.
The improved correction is available in the latest version of the JWST Calibration Pipeline and replaces the correction provided in September 2023.
New reference files for the MIRI Low-Resolution Spectrometer (LRS) improve the wavelength and photometric calibration, as well as the aperture correction.
Investigations over the last 18 months help characterize the decline in the MIRI count rate.
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.
Calibration data reveals a reduced count rate in the long-wavelength filters of the MIRI Imager.
Multiple updates to the MIRI Medium Resolution Spectrometer (MRS) pipeline and the associated reference files are now available.
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.
Routine performance monitoring has revealed an anomaly in the MIRI Medium Resolution Spectrometer.
After a thorough investigation, the MIRI MRS mode will gradually return to full science scheduling.
The new MIRI readout patterns have been revised to mitigate certain anomalies.
The latest version of APT now makes it possible to create background observations for MIRI coronagraphy.
Scientists who are interested in mid-infrared observations with JWST can now use MIRISim to generate their own simulated observations.
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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.