Telescope system of the Space Infrared Telescope for Cosmology and Astrophysics (SPICA) mission

Details Telescope system of the Space Infrared Telescope for Cosmology and Astrophysics (SPICA) mission Telescope system of the Space Infrared Telescope for Cosmology and Astrophysics (SPICA) mission

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.554..297o&link_type=abstract

In: Proceedings of the 5th International Conference on Space Optics (ICSO 2004), 30 March - 2 April 2004, Toulouse, France. Ed.:

Astronomy and Astrophysics

Astronomy

1

Spica, Infrared Astronomy, Cooled Telescope

Scientific paper

The Space Infrared Telescope for Cosmology and Astrophysics (SPICA) mission is a Japanese astronomical infrared satellite project optimized for mid-to far-infrared observations. It will be launched at ambient temperature and cooled down on orbit by mechanical coolers on board with an efficient radiative cooling system, which allow us to have a 3.5 m cooled (4.5K) telescope in space. SPICA will answer a number of important problems in present-day astronomy, ranging from the star-formation history of the universe to the formation of planets, owing to its high spatial-resolution and unprecedented sensitivity in the mid-to far-infrared. The large aperture mirror for cryogenically use in space, however, demands a challenging development for the telescope system. A single aperture design of the primary mirror will be adopted for the SPICA telescope rather than deployable mirror designs to avoid further complexity and ensure the feasibility. The number of actuators for the primary mirror, if needed, will be minimized. Silicon carbide and carbon-fiber reinforced silicon carbide are extensively investigated at present as the prime candidate materials for the SPICA primary mirror. This presentation reports the current status of the SPICA telescope system development.

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