SPICA's 2.5-meter telescope is planned to be cooled to below -265°C, about 8 degrees above absolute zero.
Sources
- SPICA: A telescope to tell our history in the Universe – Cosmos (cosmos.isas.jaxa.jp)
- https://arxiv.org/html/1803.10438 (arxiv.org)
- https://www.cambridge.org/core/journals/publications-of-the-astronomical-society-of-australia/article/spicaa-large-cryogenic-infrared-space-telescope-unveiling-the-obscured-universe/849EB509F620BA23BA7C0D632F2F9B01 (cambridge.org)
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