Subaru FMOS now and future

Naoyuki Tamura, Naruhisa Takato, Fumihide Iwamuro, Masayuki Akiyama, Masahiko Kimura, Philip Tait, Gavin B. Dalton, Graham J. Murray, Scott Smedley, Toshinori Maihara, Kouji Ohta, Yuuki Moritani, Kiyoto Yabe, Masanao Sumiyoshi, Tomonori Totani, Hajime Sugai, Hiroshi Karoji, Shiang Yu Wang, Youichi Ohyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)


Fiber Multi Object Spectrograph "FMOS" on Subaru Telescope is capable of configuring 400 fibers on the 30-arcmin diameter field of view at the prime focus for near-infrared (0.9-1.8 μm) spectroscopy, and this instrument has been open as a common-use instrument since May 2010. In this article, an overview of the instrument is given first, and then the typical operational sequence in science observation and a few notable features of the instrument are explained. In §§ 5, the instrument performance in terms of fiber positioning, auto guiding, and sensitivity to emission lines are highlighted. Recently (since March 2012) a Subaru Strategic Program (SSP) has started with FMOS to conduct a wide-field galaxy survey for a cosmological experiment. Upgrading fiber configuration by using a "metrology camera" has also been under discussion, which will enable to measure the positions of the 400 fibers quickly and shorten the fiber configuration time significantly. We will also report the status of these recent activities.

Original languageEnglish
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy IV
Publication statusPublished - 2012
EventGround-Based and Airborne Instrumentation for Astronomy IV - Amsterdam, Netherlands
Duration: 2012 Jul 12012 Jul 6

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherGround-Based and Airborne Instrumentation for Astronomy IV


  • Multiobject spectroscopy
  • Near infrared
  • Optical fibers
  • Subaru telescope

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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