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Proceedings Paper

GMOS: the GEMINI Multiple Object Spectrographs
Author(s): Roger Llewelyn Davies; Jeremy R. Allington-Smith; P. Bettess; E. Chadwick; Robert Content; George N. Dodsworth; Roger Haynes; David Lee; Ian J. Lewis; John Webster; Eli Ettedgui-Atad; Steven M. Beard; Maureen A. Ellis; Peter R. Hastings; Phil R. Williams; Tim Bond; David Crampton; Timothy J. Davidge; J. Murray Fletcher; Brian Leckie; Christopher L. Morbey; Richard G. Murowinski; Scott C. Roberts; Leslie K. Saddlemyer; Jerry Sebesta; James R. Stilburn; Kei Szeto
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Paper Abstract

The two Gemini multiple object spectrographs (GMOS) are being designed and built for use with the Gemini telescopes on Mauna Kea and Cerro Pachon starting in 1999 and 2000 respectively. They have four operating modes: imaging, long slit spectroscopy, aperture plate multiple object spectroscopy and area (or integral field) spectroscopy. The spectrograph uses refracting optics for both the collimator and camera and uses grating dispersion. The image quality delivered to the spectrograph is anticipated to be excellent and the design is driven by the need to retain this acuity over a large wavelength range and the full 5.5 arcminute field of view. The spectrograph optics are required to perform from 0.36 to 1.8 microns although it is likely that the northern and southern versions of GMOS will use coatings optimized for the red and blue respectively. A stringent flexure specification is imposed by the scientific requirement to measure velocities to high precision (1 - 2 km/s). Here we present an overview of the design concentrating on the optical and mechanical aspects.

Paper Details

Date Published: 21 March 1997
PDF: 8 pages
Proc. SPIE 2871, Optical Telescopes of Today and Tomorrow, (21 March 1997); doi: 10.1117/12.268996
Show Author Affiliations
Roger Llewelyn Davies, Durham Univ. (United Kingdom)
Jeremy R. Allington-Smith, Durham Univ. (United Kingdom)
P. Bettess, Durham Univ. (United Kingdom)
E. Chadwick, Durham Univ. (United Kingdom)
Robert Content, Durham Univ. (United Kingdom)
George N. Dodsworth, Durham Univ. (United Kingdom)
Roger Haynes, Durham Univ. (United Kingdom)
David Lee, Durham Univ. (United Kingdom)
Ian J. Lewis, Durham Univ. (United Kingdom)
John Webster, Durham Univ. (United Kingdom)
Eli Ettedgui-Atad, Royal Observatory Edinburgh (United Kingdom)
Steven M. Beard, Royal Observatory Edinburgh (United Kingdom)
Maureen A. Ellis, Royal Observatory Edinburgh (United Kingdom)
Peter R. Hastings, Royal Observatory Edinburgh (United Kingdom)
Phil R. Williams, Royal Observatory Edinburgh (United Kingdom)
Tim Bond, Dominion Astrophysical Observatory (Canada)
David Crampton, Dominion Astrophysical Observatory (Canada)
Timothy J. Davidge, Dominion Astrophysical Observatory (Canada)
J. Murray Fletcher, Dominion Astrophysical Observatory (Canada)
Brian Leckie, Dominion Astrophysical Observatory (Canada)
Christopher L. Morbey, Dominion Astrophysical Observatory (Canada)
Richard G. Murowinski, Dominion Astrophysical Observatory (Canada)
Scott C. Roberts, Dominion Astrophysical Observatory (Canada)
Leslie K. Saddlemyer, Dominion Astrophysical Observatory (Canada)
Jerry Sebesta, Dominion Astrophysical Observatory (Canada)
James R. Stilburn, Dominion Astrophysical Observatory (Canada)
Kei Szeto, Dominion Astrophysical Observatory (Canada)

Published in SPIE Proceedings Vol. 2871:
Optical Telescopes of Today and Tomorrow
Arne L. Ardeberg, Editor(s)

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