Prime focus spectrograph (PFS) for the Subaru Telescope: the prime focus instrument

Shiang-Yu Wang; Masahiko Kimura; Chi-Hung Yan; Yin-Chang Chang; Shu-Fu Hsu; Jennifer Karr; Hsin-Yo Chen; Pin-Jie Huang; Chih-Yi Wen; Richard C. Y. Chou; Hung-Hsu Ling; Naoyuki Tamura; Yuki Moritani; Julien Rousselle; Hiroshige Yoshida; Shintaro Koshida; Naruhisa Takato; Dan J Reiley; Mitsuko Roberts; James E. Gunn; Craig Loomis; Robert H. Lupton; Neven Caplar; Hassan Siddiqui; Décio Ferreira; Leandro Henrique dos Santos; Ligia Souza Oliveira; Antonio Cesar de Oliveira; Lucas Souza Marrara; Maximilian Fabricius; Graham J. Murray

doi:10.1117/12.2629098

29 August 2022 Prime focus spectrograph (PFS) for the Subaru Telescope: the prime focus instrument

Shiang-Yu Wang, Masahiko Kimura, Chi-Hung Yan, Yin-Chang Chang, Shu-Fu Hsu, Jennifer Karr, Hsin-Yo Chen, Pin-Jie Huang, Chih-Yi Wen, Richard C. Y. Chou, Hung-Hsu Ling, Naoyuki Tamura, Yuki Moritani, Julien Rousselle, Hiroshige Yoshida, Shintaro Koshida, Naruhisa Takato, Dan J Reiley, Mitsuko Roberts, James E. Gunn, Craig Loomis, Robert H. Lupton, Neven Caplar, Hassan Siddiqui, Décio Ferreira, Leandro Henrique dos Santos, Ligia Souza Oliveira, Antonio Cesar de Oliveira, Lucas Souza Marrara, Maximilian Fabricius, Graham J. Murray

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121846R (2022) https://doi.org/10.1117/12.2629098
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

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. PFS will cover 1.3 degrees 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 and fiducial fibers are located. In addition, the acquisition and guiding cameras (AGCs), the cable wrapper, the fiducial fiber 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. The assembly, integration and verification of PFI was completed in 2021. The performance of PFI meets the requirements and it was delivered to Subaru telescope in June 2021. Consequently, various tests and engineering runs were carried out to calibrate the PFI and verify the performance of the PFI with the telescope.

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Shiang-Yu Wang, Masahiko Kimura, Chi-Hung Yan, Yin-Chang Chang, Shu-Fu Hsu, Jennifer Karr, Hsin-Yo Chen, Pin-Jie Huang, Chih-Yi Wen, Richard C. Y. Chou, Hung-Hsu Ling, Naoyuki Tamura, Yuki Moritani, Julien Rousselle, Hiroshige Yoshida, Shintaro Koshida, Naruhisa Takato, Dan J Reiley, Mitsuko Roberts, James E. Gunn, Craig Loomis, Robert H. Lupton, Neven Caplar, Hassan Siddiqui, Décio Ferreira, Leandro Henrique dos Santos, Ligia Souza Oliveira, Antonio Cesar de Oliveira, Lucas Souza Marrara, Maximilian Fabricius, and Graham J. Murray "Prime focus spectrograph (PFS) for the Subaru Telescope: the prime focus instrument", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121846R (29 August 2022); https://doi.org/10.1117/12.2629098

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