9 August 2016 The current status of prime focus instrument of Subaru prime focus spectrograph
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Abstract
The Prime Focus Spectrograph (PFS) is a new optical/near-infrared multi-fiber spectrograph design for the prime focus of the 8.2m Subaru telescope. PFS will cover 1.3 degree diameter field with 2394 fibers to complement the imaging capability of Hyper SuprimeCam (HSC). The prime focus unit of PFS called Prime Focus Instrument (PFI) provides the interface with the top structure of Subaru telescope and also accommodates the optical bench in which Cobra fiber positioners are located. In addition, the acquisition and guiding cameras (AGCs), the optical fiber positioner system, the cable wrapper, the fiducial fibers, illuminator, and viewer, the field element, and the telemetry system are located inside the PFI. The mechanical structure of the PFI was designed with special care such that its deflections sufficiently match those of the HSC’s Wide Field Corrector (WFC) so the fibers will stay on targets over the course of the observations within the required accuracy. In this report, the latest status of PFI development will be given including the performance of PFI components, the setup and performance of the integration and testing equipment.
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Shiang-Yu Wang, Shiang-Yu Wang, Mark A. Schwochert, Mark A. Schwochert, Pin-Jie Huang, Pin-Jie Huang, Hsin-Yo Chen, Hsin-Yo Chen, Masahiko Kimura, Masahiko Kimura, Richard C. Y. Chou, Richard C. Y. Chou, Yin-Chang Chang, Yin-Chang Chang, Yen-Sang Hu, Yen-Sang Hu, Hung-Hsu Ling, Hung-Hsu Ling, Chaz N. Morantz, Chaz N. Morantz, Dan J. Reiley, Dan J. Reiley, Peter Mao, Peter Mao, David F. Braun, David F. Braun, Chih-Yi Wen, Chih-Yi Wen, Chi-Hung Yan, Chi-Hung Yan, Jennifer Karr, Jennifer Karr, James E. Gunn, James E. Gunn, Graham Murray, Graham Murray, Naoyuki Tamura, Naoyuki Tamura, Naruhisa Takato, Naruhisa Takato, Atsushi Shimono, Atsushi Shimono, Decio Ferreira, Decio Ferreira, Leandro Henrique dos Santos, Leandro Henrique dos Santos, Ligia Souza Oliveira, Ligia Souza Oliveira, Antonio Cesar de Oliveira, Antonio Cesar de Oliveira, Lucas Souza Marrara, Lucas Souza Marrara, } "The current status of prime focus instrument of Subaru prime focus spectrograph", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 990882 (9 August 2016); doi: 10.1117/12.2232044; https://doi.org/10.1117/12.2232044
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