Share Email Print
cover

Proceedings Paper

Progress with the Prime Focus Spectrograph for the Subaru Telescope: a massively multiplexed optical and near-infrared fiber spectrograph
Author(s): Hajime Sugai; Naoyuki Tamura; Hiroshi Karoji; Atsushi Shimono; Naruhisa Takato; Masahiko Kimura; Youichi Ohyama; Akitoshi Ueda; Hrand Aghazarian; Marcio Vital de Arruda; Robert H. Barkhouser; Charles L. Bennett; Steve Bickerton; Alexandre Bozier; David F. Braun; Khanh Bui; Christopher M. Capocasale; Michael A. Carr; Bruno Castilho; Yin-Chang Chang; Hsin-Yo Chen; Richard C. Y. Chou; Olivia R. Dawson; Richard G. Dekany; Eric M. Ek; Richard S. Ellis; Robin J. English; Didier Ferrand; Décio Ferreira; Charles D. Fisher; Mirek Golebiowski; James E. Gunn; Murdock Hart; Timothy M. Heckman; Paul T. P. Ho; Stephen Hope; Larry E. Hovland; Shu-Fu Hsu; Yen-Sang Hu; Pin Jie Huang; Marc Jaquet; Jennifer E. Karr; Jason G. Kempenaar; Matthew E. King; Olivier Le Fèvre; David Le Mignant; Hung-Hsu Ling; Craig Loomis; Robert H. Lupton; Fabrice Madec; Peter Mao; Lucas Souza Marrara; Brice Ménard; Chaz Morantz; Hitoshi Murayama; Graham J. Murray; Antonio Cesar de Oliveira; Claudia Mendes de Oliveira; Ligia Souza de Oliveira; Joe D. Orndorff; Rodrigo de Paiva Vilaça; Eamon J. Partos; Sandrine Pascal; Thomas Pegot-Ogier; Daniel J. Reiley; Reed Riddle; Leandro Santos; Jesulino Bispo dos Santos; Mark A. Schwochert; Michael D. Seiffert; Stephen A. Smee; Roger M. Smith; Ronald E. Steinkraus; Laerte Sodré; David N. Spergel; Christian Surace; Laurence Tresse; Clément Vidal; Sebastien Vives; Shiang-Yu Wang; Chih-Yi Wen; Amy C. Wu; Rosie Wyse; Chi-Hung Yan
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

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 μm to 1.26 μm, 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 μm to 0.89 μm also will be available by simply exchanging dispersers. PFS takes the role for the spectroscopic part of the Subaru Measurement of Images and Redshifts (SuMIRe) project, while Hyper Suprime-Cam (HSC) works on the imaging part. HSC’s excellent image qualities have proven the high quality of the Wide Field Corrector (WFC), which PFS shares with HSC. The PFS collaboration has succeeded in the project Preliminary Design Review and is now in a phase of subsystem Critical Design Reviews and construction. To transform the telescope plus WFC focal ratio, a 3-mm thick broad-band coated microlens is glued to each fiber tip. The microlenses are molded glass, providing uniform lens dimensions and a variety of refractive-index selection. After successful production of mechanical and optical samples, mass production is now complete. Following careful investigations including Focal Ratio Degradation (FRD) measurements, 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. After evaluating the statistics of positioning accuracies, collision avoidance software, and interferences (if any) within/between electronics boards, mass production will commence. 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. All optical glass blanks are now being polished. 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. The active damping system against cooler vibration has been proven to work as predicted, and spectrographs have been designed to avoid small possible residual resonances.

Paper Details

Date Published: 8 July 2014
PDF: 14 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91470T (8 July 2014); doi: 10.1117/12.2054294
Show Author Affiliations
Hajime Sugai, Kavli Institute for the Physics and Mathematics of the Universe, The Univ. of Tokyo (Japan)
Naoyuki Tamura, Kavli Institute for the Physics and Mathematics of the Universe, The Univ. of Tokyo (Japan)
Hiroshi Karoji, Kavli Institute for the Physics and Mathematics of the Universe, The Univ. of Tokyo (Japan)
Atsushi Shimono, Kavli Institute for the Physics and Mathematics of the Universe, The Univ. of Tokyo (Japan)
Naruhisa Takato, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Masahiko Kimura, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Youichi Ohyama, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Akitoshi Ueda, National Astronomical Observatory of Japan (Japan)
Hrand Aghazarian, Jet Propulsion Lab. (United States)
Marcio Vital de Arruda, Lab. Nacional de Astrofísica (Brazil)
Robert H. Barkhouser, Johns Hopkins Univ. (United States)
Charles L. Bennett, Johns Hopkins Univ. (United States)
Steve Bickerton, Kavli Institute for the Physics and Mathematics of the Universe, The Univ. of Tokyo (Japan)
Alexandre Bozier, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
David F. Braun, Jet Propulsion Lab. (United States)
Khanh Bui, California Institute of Technology (United States)
Christopher M. Capocasale, Jet Propulsion Lab. (United States)
Michael A. Carr, Princeton Univ. (United States)
Bruno Castilho, Lab. Nacional de Astrofísica (Brazil)
Yin-Chang Chang, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Hsin-Yo Chen, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Richard C. Y. Chou, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Olivia R. Dawson, Jet Propulsion Lab. (United States)
Richard G. Dekany, Caltech Optical Observatories (United States)
Eric M. Ek, Jet Propulsion Lab. (United States)
Richard S. Ellis, California Institute of Technology (United States)
Robin J. English, Jet Propulsion Lab. (United States)
Didier Ferrand, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Décio Ferreira, Lab. Nacional de Astrofísica (Brazil)
Charles D. Fisher, Jet Propulsion Lab. (United States)
Mirek Golebiowski, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
James E. Gunn, Princeton Univ. (United States)
Murdock Hart, Johns Hopkins Univ. (United States)
Timothy M. Heckman, Johns Hopkins Univ. (United States)
Paul T. P. Ho, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Stephen Hope, Johns Hopkins Univ. (United States)
Larry E. Hovland, Jet Propulsion Lab. (United States)
Shu-Fu Hsu, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Yen-Sang Hu, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Pin Jie Huang, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Marc Jaquet, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Jennifer E. Karr, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Jason G. Kempenaar, Jet Propulsion Lab. (United States)
Matthew E. King, Jet Propulsion Lab. (United States)
Olivier Le Fèvre, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
David Le Mignant, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Hung-Hsu Ling, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Craig Loomis, Princeton Univ. (United States)
Robert H. Lupton, Princeton Univ. (United States)
Fabrice Madec, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Peter Mao, California Institute of Technology (United States)
Lucas Souza Marrara, Lab. Nacional de Astrofísica (Brazil)
Brice Ménard, Johns Hopkins Univ. (United States)
Chaz Morantz, Jet Propulsion Lab. (United States)
Hitoshi Murayama, Kavli Institute for the Physics and Mathematics of the Universe, The Univ. of Tokyo (Japan)
Graham J. Murray, Durham Univ. (United Kingdom)
Antonio Cesar de Oliveira, Lab. Nacional de Astrofísica (Brazil)
Claudia Mendes de Oliveira, Univ. de São Paulo (Brazil)
Ligia Souza de Oliveira, Lab. Nacional de Astrofísica (Brazil)
Joe D. Orndorff, Johns Hopkins Univ. (United States)
Rodrigo de Paiva Vilaça, Lab. Nacional de Astrofísica (Brazil)
Eamon J. Partos, Jet Propulsion Lab. (United States)
Sandrine Pascal, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Thomas Pegot-Ogier, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Daniel J. Reiley, California Institute of Technology (United States)
Reed Riddle, California Institute of Technology (United States)
Leandro Santos, Lab. Nacional de Astrofísica (Brazil)
Jesulino Bispo dos Santos, Lab. Nacional de Astrofísica (Brazil)
Mark A. Schwochert, Jet Propulsion Lab. (United States)
Michael D. Seiffert, Jet Propulsion Lab. (United States)
California Institute of Technology (United States)
Stephen A. Smee, Johns Hopkins Univ. (United States)
Roger M. Smith, Caltech Optical Observatories (United States)
Ronald E. Steinkraus, Jet Propulsion Lab. (United States)
Laerte Sodré, Univ. de São Paulo (Brazil)
David N. Spergel, Princeton Univ. (United States)
Christian Surace, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Laurence Tresse, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Clément Vidal, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Sebastien Vives, Aix-Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
Shiang-Yu Wang, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Chih-Yi Wen, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)
Amy C. Wu, Jet Propulsion Lab. (United States)
Rosie Wyse, Johns Hopkins Univ. (United States)
Chi-Hung Yan, Institute of Astronomy and Astrophysics, Academia Sinica (Taiwan)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

© SPIE. Terms of Use
Back to Top