FMOS: Fiber Multi Object Spectrograph
| ATTENTION: In S10A and S10B, FMOS will be operated in a shared-risk mode. Observers will be only allowed to use IRS1 in the Low Resolution (LR) mode. |
Introduction
FMOS is a fiber-fed multi-object spectrograph. The Echidna fiber positioner system configures 400 fibers with an accuracy of 0.2" rms in the 30-arcmin diamter field of view at the Subaru prime focus and these fibers are extracted as spectra by the two spectrographs (IRS1 & IRS2). A mask mirror is installed in these spectrographs for OH airglow suppression (OHS). The spectral coverage is from 0.9 μm to 1.8 μm. This is observed at one exposure entirely with R=500 in the Low Resolution (LR) mode, while it is divided into four parts ("J-short", "J-long", "H-short" & "H-long") with a ~0.2 μm coverage and one of them is observed at one exposure with R=2200 in the High Resolution (HR) mode.
Contents
- System Overview
- Basic Instrument Parameters
- Observation
- Planning observation
- A new release
(20100506 version) of Spine-to-object (S2O) allocation
software (see text for details) is now available here
for Linux and Mac OS X (10.4 or higher). An HTML user
manual is available in the "doc" directory. Several examples
of catalogs are also available in the "examples"
directory.
!!Important notes for S10A observers!! - To submit .s2o files for your S10A observations, you need to download and use this newer release (20100506 version). DO NOT submit .s2o files made by using the older version.
- Since only IRS1 is available in S10A, all the fibers/spines connected to IRS2 are disabled in the software.
- Observation procedure
- Performance
- Measured system throughput
- Guideline of sensitivity
- Spectra from engineerng observations
- FMOS spectrum simulator
- Information for PIs
- Proposal checklist
- Observation checklist
- Preparation for an OPE file (A template will be available here soon.)
- List of OH masks
- Comment on data reduction package
Further information
Questions regarding these pages should be directed to Naoyuki Tamura. Please note that all numbers on these pages are subject to change as the characteristics and performance of FMOS are better determined.
References
Readers can also refer to the papers as listed below and references therein for more details of this instrument:- "The Fibre Multi-Object Spectrograph (FMOS) for Subaru Telescope"
- Kimura, M., et al. 2010, Publication of Astronomical Sciety of Japan, Vol. 62, in press.
- "FMOS: the fiber multiple-object spectrograph: Part VI. Onboard performances and results of the engineering observations"
- Iwamuro, F. et al. 2008, Proc. of SPIE, Vol. 7014, 26
- "Performance of Echidna fiber positioner for FMOS on Subaru"
- Akiyama, M., et al. 2008, Proc. of SPIE, Vol. 7018, 94
- "Echidna: the engineering challenges"
- Brzeski, J., et al. 2004, Proc. of SPIE, Vol. 5492, 1228
- "Integration, commissioning, and performance of the UK FMOS spectrograph"
- Dalton, G., et al. 2008, Proc. of SPIE, Vol. 7014, 127
- "Design and construction of the fibre system for FMOS"
- Murray, G., et al. 2008, Proc. of SPIE, Vol. 7014, 186
- "Cryogenic tests of volume-phase holographic gratings: results at 100 K"
- Tamura, N. et al. 2006, Applied Optics, Vol. 45, 5923
Last updated: May 13, 2010