Progress with the Prime Focus Spectrograph for the Subaru Telescope: a massively multiplexed optical and near-infrared fiber spectrograph
Creators: name: Sugai, Hajime
name: Tamura, Naoyuki
name: Karoji, Hiroshi
name: Shimono, Atsushi
name: Takato, Naruhisa
name: Kimura, Masahiko
name: Ohyama, Youichi
name: Ueda, Akitoshi
name: Aghazarian, Hrand
name: de Arruda, Marcio Vital
name: Barkhouser, Robert H.
name: Bennett, Charles L.
name: Bickerton, Steve
name: Bozier, Alexandre
name: Braun, David F.
name: Bui, Khanh
name: Capocasale, Christopher M.
name: Carr, Michael A.
name: Castilho, Bruno
name: Chang, Yin-Chang
name: Chen, Hsin-Yo
name: Chou, Richard C. Y.
name: Dawson, Olivia R.
name: Dekany, Richard G.
name: Ek, Eric M.
name: Ellis, Richard S.
name: English, Robin J.
name: Ferrand, Didier
name: Ferreira, Décio
name: Fisher, Charles D.
name: Golebiowski, Mirek
name: Gunn, James E.
name: Hart, Murdock
name: Heckman, Timothy M.
name: Ho, Paul T. P.
name: Hope, Stephen
name: Hovland, Larry E.
name: Hsuc, Shu-Fu
name: Hu, Yen-Shan
name: Huang, Pin Jie
name: Jaquet, Marc
name: Karr, Jennifer E.
name: Kempenaar, Jason G.
name: King, Matthew E.
name: Fèvre, Olivier Le
name: Mignant, David Le
name: Ling, Hung-Hsu
name: Loomis, Craig
name: Lupton, Robert H.
name: Madec, Fabrice
name: Mao, Peter
name: Marrara, Lucas Souza
name: Ménard, Brice
name: Morantz, Chaz
name: Murayama, Hitoshi
name: Murray, Graham J.
name: de Oliveira, Antonio Cesar
name: de Oliveira, Claudia Mendes
name: de Oliveira, Ligia Souza
name: Orndorff, Joe D.
name: Vilaça, Rodrigo de Paiva
name: Partos, Eamon J.
name: Pascal, Sandrine
name: Pegot-Ogier, Thomas
name: Reiley, Daniel J.
name: Riddle, Reed
name: Santos, Leandro
name: Santos, Jesulino Bispo dos
name: Schwochert, Mark A.
name: Seiffert, Michael D.
name: Smee, Stephen A.
name: Smith, Roger M.
name: Steinkraus, Ronald E.
name: Sodré, Laerte
name: Spergel, David N.
name: Surace, Christian
name: Tresse, Laurence
name: Vidal, Clément
name: Vives, Sebastien
name: Wang, Shiang-Yu
name: Wen, Chih-Yi
name: Wu, Amy C.
name: Wyse, Rosie
name: Yan, Chi-Hung
Publisher: name: arXiv
Year: 2014
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The Prime Focus Spectrograph (PFS) is an optical/near-infrared multi-fiber spectrograph with 2394 science fibers, which are distributed in 1.3 degree diameter field of view at Subaru 8.2-meter telescope. The simultaneous wide wavelength coverage from 0.38 um to 1.26 um, with the resolving power of 3000, strengthens its ability to target three main survey programs: cosmology, Galactic archaeology, and galaxy/AGN evolution. A medium resolution mode with resolving power of 5000 for 0.71 um to 0.89 um also will be available by simply exchanging dispersers. PFS takes the role for the spectroscopic part of the Subaru Measurement of Images and Redshifts project, while Hyper Suprime-Cam works on the imaging part. To transform the telescope plus WFC focal ratio, a 3-mm thick broad-band coated glass-molded microlens is glued to each fiber tip. A higher transmission fiber is selected for the longest part of cable system, while one with a better FRD performance is selected for the fiber-positioner and fiber-slit components, given the more frequent fiber movements and tightly curved structure. Each Fiber positioner consists of two stages of piezo-electric rotary motors. Its engineering model has been produced and tested. Fiber positioning will be performed iteratively by taking an image of artificially back-illuminated fibers with the Metrology camera located in the Cassegrain container. The camera is carefully designed so that fiber position measurements are unaffected by small amounts of high special-frequency inaccuracies in WFC lens surface shapes. Target light carried through the fiber system reaches one of four identical fast-Schmidt spectrograph modules, each with three arms. Prototype VPH gratings have been optically tested. CCD production is complete, with standard fully-depleted CCDs for red arms and more-challenging thinner fully-depleted CCDs with blue-optimized coating for blue arms.
description: 14 pages, 12 figures, submitted to "Ground-based and Airborne Instrumentation for Astronomy V, Suzanne K. Ramsay, Ian S. McLean, Hideki Takami, Editors, Proc. SPIE 9147 (2014)"