@inproceedings{oai:jaxa.repo.nii.ac.jp:00010554, author = {塩谷, 圭吾 and 小谷, 隆行 and 中川, 貴雄 and 片坐, 宏一 and 櫨, 香奈恵 and 樋口, 慎 and 三田, 信 and 小松, 敬治 and 内田, 英樹 and 宮田, 隆志 and Enya, Keigo and Kotani, Takayuki and Nakagawa, Takao and Kataza, Hirokazu and Haze, Kanae and Higuchi, Shin and Mita, Makoto and Komatsu, Keiji and Uchida, Hideki and Miyata, Takashi}, book = {宇宙科学シンポジウム: 講演集録, Proceedings of the Space Science Symposium}, month = {Jan}, note = {第10回宇宙科学シンポジウム (2010年1月7日-8日. 宇宙航空研究開発機構宇宙科学研究本部), 10th Space Science Symposium (January 7-8, 2010. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)), Sagamihara, Kanagawa Japan, The SPace Infrared telescope for Cosmology and Astrophysics (SPICA) is a infrared space-borne telescope mission of the next generation following AKARI. SPICA will carry a telescope with a 3m class diameter monolithic primary mirror and the whole telescope will be cooled to 5K. SPICA is planned to be launched in 2018, into the sun-earth L2 libration halo orbit and execute infrared observations at wavelengths mainly between 5 and 200 micron. The large telescope aperture, the simple pupil shape, the capability of infrared observations from space, and the early launch gives us with the SPICA mission a unique opportunity for coronagraphic observation. We have started development of a coronagraphic instrument for SPICA. For our laboratory demonstration, we focused on a coronagraph with a binary shaped pupil mask as the primary candidate for SPICA because of its feasibility. In an experiment with a binary shaped pupil coronagraph with a He-Ne laser (Lambda=632.8nm), the achieved raw contrast was 6.7×10-8, derived from the average measured in the dark region without active wavefront control. We also present recent progress made in the cryogenic active optics for SPICA. Prototypes of cryogenic deformable by Micro Electro Mechanical Systems (MEMS) techniques were developed and a first demonstration of the deformation of their surfaces was performed with liquid nitrogen cooling. Experiments with piezo-actuators for a cryogenic tip-tilt mirror are also ongoing. Optical/mechanical design of the instrument is shown., 著者人数: 34人, 形態: カラー図版あり, 形態: CD-ROM1枚, Number of authors: 34, Physical characteristics: Original contains color illustrations, Note: One CD-ROM, 資料番号: AA0064742063}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)}, title = {Developelment of mid-infrared coronagraph for SPICA}, volume = {10}, year = {2010} }