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The Mid-Infrared Instrument, the second of NASA's four primary scientific instruments, has completed its postlaunch preparations and is now ready to begin science observations.
Finally, MIRI's coronagraphic imaging capability was checked off since it uses two different types of masks when attempting to observe the planets orbiting a star to block starlight from reaching its sensors.
With the help of these customized masks, scientists can now actively look for exoplanets in the universe and explore the dust disks that surround their host stars. Until now, this type of research hadn't been possible.
The MIRI instrument, along with Webb's other three instruments, was initially cooled to a temperature of 90 Kelvin in the shade of Webb's large sun shield.
With an electrically powered cryocooler, it could reach temperatures as low as 7 Kelvin, barely above the lowest temperature matter could reach.
By operating at such extreme temperatures, MIRI can deliver mid-infrared images and spectra that combine an unprecedented combination of sensitivity and sharpness.
The instrument we use today, MIRI, is a state-of-the-art instrument that performs better than expected in all its capabilities, which is a great relief for our research team.
MIRI has been successfully commissioned by our multinational team in just a few weeks and we're very proud of their accomplishment.
Gillian Wright, MIRI European principal investigator at the UK Astronomy Technology Centre, and George Rieke, MIRI science lead at the University of Arizona, celebrate the success of MIRI in exploring the infrared universe in the way and depth never attempted before,' they said.
The MIRI program was a partnership between NASA and ESA, with NASA's Jet Propulsion Laboratory leading the U.S. effort and a multinational consortium of European astronomical institutes collaborating for ESA.
As the NIRISS and MIRI post-launch commissioning activities are now completed, the Webb team will concentrate on ensuring that the remaining two modes on its other instruments are also corrected.
On July 12, 2022, NASA will release its first full-color images and spectroscopic data obtained from the James Webb Space Telescope under the partnership with ESA (European Space Agency) and CSA.
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