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Proceedings Paper

IMACS: the multiobject spectrograph and imager for the Magellan I telescope
Author(s): Bruce C. Bigelow; Alan M. Dressler; Stephen A. Shectman; Harland W. Epps
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Paper Abstract

The Inamori Magellan Areal Camera and Spectrograph (IMACS) will be one of three first-generation instruments for the Magellan 6.5 m telescopes. It will be installed at the f/11 (Gregorian) Nasmyth focus. This instrument drove the specification and design of the f/11 configuration, which it uses to feed an all-spherical, wide-field collimator. The combination of the Gregorian secondary and refracting collimator lead to 0.2 arc-sec images over a 17 arc-min field with an f/2.66 camera, and 0.4 arc-sec images over a 27 arc- min field with an f/1.49 camera. This paper describes the preliminary specifications for the multiple spectrographic and imaging modes, the optical layout of the instrument and Epps cameras, and strategies for the design and fabrication of the instrument.

Paper Details

Date Published: 9 July 1998
PDF: 7 pages
Proc. SPIE 3355, Optical Astronomical Instrumentation, (9 July 1998);
Show Author Affiliations
Bruce C. Bigelow, Observatories of the Carnegie Institute of Washington (United States)
Alan M. Dressler, Observatories of the Carnegie Institute of Washington (United States)
Stephen A. Shectman, Observatories of the Carnegie Institute of Washington (United States)
Harland W. Epps, UCO/Lick Observatory (United States)

Published in SPIE Proceedings Vol. 3355:
Optical Astronomical Instrumentation
Sandro D'Odorico, Editor(s)

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