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FOCAS: The Faint Object Camera and Spectrograph for the Subaru Telescope

2002; Oxford University Press; Volume: 54; Issue: 6 Linguagem: Inglês

10.1093/pasj/54.6.819

2053-051X

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

Astrophysics and Star Formation Studies

Abstract The Faint Object Camera and Spectrograph (FOCAS) is a Cassegrain optical instrument for the Subaru Telescope. Its capabilities include $6^\prime \phi$ FOV direct imaging, low-resolution spectroscopy ($R=250 \hbox{--} 2000$ with ${0\rlap {.}{}^{\mathrm {\prime \prime }}4}$ slitwidth), multi-slit spectroscopy and polarimetry. We describe the overall design of FOCAS, its observing functions, and the performance verification procedures that have been carried out.