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FOCAS: faint object camera and spectrograph for the Subaru Telescope

2000; SPIE; Volume: 4008; Linguagem: Inglês

10.1117/12.395414

1996-756X

Nobunari Kashikawa, Motoko Inata, Masanori Iye, Koji S. Kawabata, Kiichi Okita, George Kosugi, Youichi Ohyama, Toshiyuki Sasaki, K. Sekiguchi, Tadafumi Takata, Yasuhiro Shimizu, M. Yoshida, Kentaro Aoki, Yoshihiko Saito, Ryo Asai, Hiroko Taguchi, Noboru Ebizuka, Tomohiko Ozawa, Yasushi Yadoùmaru,

Adaptive optics and wavefront sensing

Faint object camera and spectrograph, FOCAS, is a Cassegrain optical instrument of Subaru telescope. It has a capability of 6 arcmin FOV direct imaging, low resolution spectroscopy, multi-slit spectroscopy as well as polarimetry. Only the imaging mode has been available so far. The overall design, the observing functions, and the preliminary performance verifications of FOCAS will be presented.