24 July 2014 Metrology camera system of prime focus spectrograph for Subaru telescope
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Abstract
The Prime Focus Spectrograph (PFS) is a new optical/near-infrared multi-fiber spectrograph designed for the prime focus of the 8.2m Subaru telescope. The metrology camera system of PFS serves as the optical encoder of the COBRA fiber motors for the configuring of fibers. The 380mm diameter aperture metrology camera will locate at the Cassegrain focus of Subaru telescope to cover the whole focal plane with one 50M pixel Canon CMOS sensor. The metrology camera is designed to provide the fiber position information within 5μm error over the 45cm focal plane. The positions of all fibers can be obtained within 1s after the exposure is finished. This enables the overall fiber configuration to be less than 2 minutes.
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Shiang-Yu Wang, Shiang-Yu Wang, Chueh-Yi Chou, Chueh-Yi Chou, Yin-Chang Chang, Yin-Chang Chang, Pin-Jie Huang, Pin-Jie Huang, Yen-Sang Hu, Yen-Sang Hu, Hsin-Yo Chen, Hsin-Yo Chen, Naoyuki Tamura, Naoyuki Tamura, Naruhisa Takato, Naruhisa Takato, Hung-Hsu Ling, Hung-Hsu Ling, James E. Gunn, James E. Gunn, Jennifer Karr, Jennifer Karr, Chi-Hung Yan, Chi-Hung Yan, Peter Mao, Peter Mao, Youichi Ohyama, Youichi Ohyama, Hiroshi Karoji, Hiroshi Karoji, Hajime Sugai, Hajime Sugai, Atsushi Shimono, Atsushi Shimono, } "Metrology camera system of prime focus spectrograph for Subaru telescope", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91475S (24 July 2014); doi: 10.1117/12.2055787; https://doi.org/10.1117/12.2055787
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