The Resolve instrument on XRISM is cooled with liquid helium and mechanical coolers to 0.05 degrees above absolute zero.
Sources
- As XRISM prepares to launch, what might the telescope reveal about the largest structures in our Universe? (cosmos.isas.jaxa.jp)
- https://svs.gsfc.nasa.gov/14244 (svs.gsfc.nasa.gov)
- https://svs.gsfc.nasa.gov/14374 (svs.gsfc.nasa.gov)
- https://www.spiedigitallibrary.org/journals/Journal-of-Astronomical-Telescopes-Instruments-and-Systems/volume-11/issue-4/042023/Resolve-instrument-onboard-XRISM--design-integration-and-instrument-test/10.1117/1.JATIS.11.4.042023.full (spiedigitallibrary.org)
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