HII/L2 Mission Cryogenic System

Details HII/L2 Mission Cryogenic System HII/L2 Mission Cryogenic System

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000isass..14..323h&link_type=abstract

The Institute of Space and Astronautical Science Report SP No. 14, p. 323-330.

Astronomy and Astrophysics

Astronomy

Infrared Astronomy, Space Cryogenics, Mechanical Cooler, Lagrangian Liberation Points

Scientific paper

The HII/L2 mission (SPICA) is a future mission to launch a large infrared observatory to the L2 orbit by an H-IIA rocket. A unique feature of its cryogenic system is a ``warm launch'' system using radiative cooling and mechanical cooling in orbit to cool down its detectors and mirrors to 4.5K. By adopting this system, we can remove the heavy vacuum shell and the helium tank needed for traditional cryostats, and reduce the weight of the spacecraft dramatically.

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