The metrology cameras for Subaru PFS and FMOS

Shiang-Yu Wang*a, Yen-Shan Hua, Chi-Hung Yana, Yin-Chang Changa, Naoyuki Tamurab, Naruhisa Takatoc, Atsushi Shimonob, Jennifer Karra, Youichi Ohyamaa, Hsin-Yo Chena, Hung-Hsu Linga, Hiroshi Karojib, Hajime Sugaib, Akitoshi Uedab

aAcademia Sinica, Institute of Astronomy and Astrophysics, P. O. Box 23-141, Taipei, Taiwan;
bKavli Institute for the Physics and Mathematics of the Universe, the University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, 277-8583, Japan;
cSubaru Telescope, National Astronomical Observatory of Japan, 650 North A’ohoku Place Hilo, HI 96720, U.S.A.

The Prime Focus Spectrograph (PFS) is a new multi-fiber spectrograph on Subaru telescope. PFS will cover around 1.4 degree diameter field with ~2400 fibers. To ensure precise positioning of the fibers, a metrology camera is designed to provide the fiber position information within 5 μm error. The final positioning accuracy of PFS is targeted to be less than 10 μm. The metrology camera will locate at the Cassegrain focus of Subaru telescope to cover the whole focal plan. The PFS metrology camera will also serve for the existing multi-fiber infrared spectrograph FMOS.

Shiang-Yu Wang et al., “The metrology cameras for Subaru PFS and FMOS”, Ground-based and Airborne Instrumentation for Astronomy IV, Ian S. McLean, Suzanne K. Ramsay, Hideki Takami, Editors, Proc. SPIE 8446 (2012).

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