FMOS: The fiber multiple-object spectrograph VI: On board performances and results of the engineering observations

Fumihide Iwamuro, Toshinori Maihara, Masayuki Akiyama, Masahiko Kimura, Naoyuki Tamura, Naruhisa Takato, Kouji Ohta, Shigeru Eto, Yuuki Moritani, Gavin B. Dalton, Ian J. Lewis, Hanshin Lee, Ian A.J. Tosh, Tim R. Froud, Graham J. Murray, Colin Blackburn, David G. Bonfield, Peter R. Gillingham, Scott Smedley, Greg A. SmithGabriella Frost

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

3 Citations (Scopus)


FMOS: the Fiber Multiple-Object Spectrograph is the next common-use instrument of the Subaru Telescope, having a capability of 400 targets multiplicity in the near-infrared 0.9-1.8μm wavelength range with a field coverage of 30- diameter. FMOS consists of three units: 1) the prime focus unit including the corrector lenses, the Echidna fiber positioner, and the instrument-bay to adjust the instrument focus and shift the axis of the corrector lens system, 2) the fiber bundle unit equipping two fiber slits on one end and a fiber connector box with the back-illumination mechanism on the other end on the bundle, 3) the two infrared spectrographs (IRS1 and IRS2) to obtain 2×200 spectra simultaneously. After all the components were installed in the telescope at the end of 2007, the total performance was checked through various tests and engineering observations. We report the results of these tests and demonstrate the performance of FMOS.

Original languageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy II
Publication statusPublished - 2008
EventGround-based and Airborne Instrumentation for Astronomy II - Marseille, France
Duration: 2008 Jun 232008 Jun 28

Publication series

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


OtherGround-based and Airborne Instrumentation for Astronomy II


  • Fiber
  • Infrared
  • Spectrograph

ASJC Scopus subject areas

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


Dive into the research topics of 'FMOS: The fiber multiple-object spectrograph VI: On board performances and results of the engineering observations'. Together they form a unique fingerprint.

Cite this