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Proceedings Paper

Gemini-north multi-object spectrograph optical performance
Author(s): Richard G. Murowinski; Jeremy R. Allington-Smith; David Crampton; Roger Llewelyn Davies; J. Murray Fletcher; David M. Henry; Isobel Hook; Inger Jorgensen; S. Juneau; Christopher L. Morbey; James R. Stilburn; Kei Szeto
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Paper Abstract

The Gemini Multiobject Spectrographs (GMOS) were designed to take advantage of the exquisite image quality expected of the Gemini telescopes. To achieve this, two of the many requirements placed on the optical system was that it not degrade the best image quality expected of the telescope by more than 10% while delivering a throughput of about 80% over the entire 0.4-1 μm waveband. In this paper, key components of the design and execution of this optical system are discussed and test results are presented demonstrating that it meets these requirements on Gemini today. Among other characteristics, we look at the image quality performance as a function of colour and field angle, the measured throughput, and the focalplane flatness on the detectors.

Paper Details

Date Published: 7 March 2003
PDF: 12 pages
Proc. SPIE 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes, (7 March 2003); doi: 10.1117/12.461729
Show Author Affiliations
Richard G. Murowinski, NRC-Herzberg Institute of Astrophysics (Canada)
Jeremy R. Allington-Smith, Univ. of Durham (United Kingdom)
David Crampton, NRC-Herzberg Institute of Astrophysics (Canada)
Roger Llewelyn Davies, Univ. of Durham (United Kingdom)
J. Murray Fletcher, NRC-Herzberg Institute of Astrophysics (Canada)
David M. Henry, UK Astronomy Technology Ctr./Royal Observatory Edinburgh (United Kingdom)
Isobel Hook, Univ. of Oxford (United Kingdom)
Inger Jorgensen, Gemini Observatory (United States)
S. Juneau, NRC-Herzberg Institute of Astrophysics (Canada)
Christopher L. Morbey, NRC-Herzberg Institute of Astrophysics (Canada)
James R. Stilburn, NRC-Herzberg Institute of Astrophysics (Canada)
Kei Szeto, NRC-Herzberg Institute of Astrophysics (Canada)

Published in SPIE Proceedings Vol. 4841:
Instrument Design and Performance for Optical/Infrared Ground-based Telescopes
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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