@inproceedings{409a6f2d175f4ea7a91cc8866f48dc56,
title = "Prime Focus Spectrograph (PFS): The prime focus instrument",
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 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 delivery of PFI components started in 2017. After the verification of these components, the mechanical structure of the PFI is fully assembled in early 2019 and all Cobra positioners are integrated in summer 2020. A temperature controlled chamber with precise x-y scanner was setup for the verification of the Cobra fiber positioners. The testing of the target convergence performance of Cobra positioners is now in progress.",
keywords = "Guiding camera, Mechanical structure, Multi-fiber, Prime focus, Spectrograph",
author = "Wang, {Shiang Yu} and Huang, {Pin Jie} and Chen, {Hsin Yo} and Masahiko Kimura and Wen, {Chih Yi} and Yan, {Chi Hung} and Jennifer Karr and Chou, {Richard C.Y.} and Chang Yin-Chang and Hsu, {Shu Fu} and Hu, {Yen Sang} and Ling, {Hung Hsu} and Reiley, {Dan J.} and Mitsuko Roberts and Gunn, {James E.} and Craig Loomis and Lupton, {Robert H.} and Hassan Siddiqui and Murray, {Graham J.} and Decio Ferreira and {dos Santos}, {Leandro Henrique} and Oliveira, {Ligia Souza} and {de Oliveira}, {Antonio Cesar} and Marrara, {Lucas Souza} and Naoyuki Tamura and Yuki Moritani and Naruhisa Takato",
note = "Publisher Copyright: {\textcopyright} 2020 SPIE; Ground-Based and Airborne Instrumentation for Astronomy VIII 2020 ; Conference date: 14-12-2020 Through 22-12-2020",
year = "2020",
doi = "10.1117/12.2561194",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Evans, {Christopher J.} and Bryant, {Julia J.} and Kentaro Motohara",
booktitle = "Ground-Based and Airborne Instrumentation for Astronomy VIII",
address = "United States",
}