Telescope system of the Space Infrared telescope for cosmology and astrophysics (SPICA) mission

Takashi Onaka; Takao Nakagawa; Toshio Matsumoto; Hiroshi Murakami; Hideo Matsuhara; Hirokazu Kataza; Hidehiro Kaneda; Keigo Enya; Yukari Y. Yui; Motohide Tamura

doi:10.1117/12.2500106

13 April 2018 Telescope system of the Space Infrared telescope for cosmology and astrophysics (SPICA) mission

Takashi Onaka, Takao Nakagawa, Toshio Matsumoto, Hiroshi Murakami, Hideo Matsuhara, Hirokazu Kataza, Hidehiro Kaneda, Keigo Enya, Yukari Y. Yui, Motohide Tamura

Author Affiliations +

Proceedings Volume 10568, International Conference on Space Optics — ICSO 2004; 105682B (2018) https://doi.org/10.1117/12.2500106
Event: International Conference on Space Optics 2004, 2004, Toulouse, France

Abstract

The Space Infrared Telescope for Cosmology and Astrophysics (SPICA) mission is a Japanese astronomical infrared satellite project optimized for mid' to far-infrared observatories. 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 3.5m 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, demand 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-filter 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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Takashi Onaka, Takao Nakagawa, Toshio Matsumoto, Hiroshi Murakami, Hideo Matsuhara, Hirokazu Kataza, Hidehiro Kaneda, Keigo Enya, Yukari Y. Yui, and Motohide Tamura "Telescope system of the Space Infrared telescope for cosmology and astrophysics (SPICA) mission", Proc. SPIE 10568, International Conference on Space Optics — ICSO 2004, 105682B (13 April 2018); https://doi.org/10.1117/12.2500106

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