1/ While everyone's eyes were on the shield tensioning, the Mid-Infrared Instrument (MIRI) provided by @esa for #Webb also had an important milestone: unlocking the Contamination Control Cover, which had to be locked for launch.
🔗 blogs.nasa.gov/webb/2022/01/0…
🎥 ESA/ATG medialab
@esa 2/ After successfully completing the tests and unlocking the cover, the instrument control electronics were then powered off before the next steps on the sunshield tensioning activities.
@esa 3/ This key step for MIRI was monitored remotely by team members in Europe, ready to provide assistance if it were needed.
@esa 4/ MIRI is an extremely versatile instrument, which will support all four of Webb’s science themes. MIRI will produce mid-infrared images and spectra with an unprecedented combination of sharpness and sensitivity. #WebbSeesFarther
@esa 5. MIRI allows scientists to use multiple observing techniques: imaging, spectroscopy and coronagraphy. This artist’s rendering shows the path for MIRI’s Medium Resolution Spectroscopy module, or MRS.
🎥 ESA/ATG medialab

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More from @ESA_Webb

8 Jan
1/ As we wait for full mirror deployment, here are some cool-to-know facts about #Webb 's mirrors.
📷 Northrop Grumman, NASA/Chris Gunn Image
2/ #Webb has a primary mirror 6.5m across as this is what was needed to measure the light from very young galaxies 🌀 over 13 billion light years away.
3/ A mirror this large had never before been launched into space! If the @HUBBLE_space 2.4 m glass mirror were scaled to be large enough for #Webb, it would be too heavy to launch into orbit.
Read 16 tweets

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