IMACS: the multiobject spectrograph and imager for the Magellan I telescope

Bruce C. Bigelow; Alan M. Dressler; Stephen A. Shectman; Harland W. Epps

doi:10.1117/12.316760

9 July 1998 IMACS: the multiobject spectrograph and imager for the Magellan I telescope

Bruce C. Bigelow, Alan M. Dressler, Stephen A. Shectman, Harland W. Epps

Proceedings Volume 3355, Optical Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.316760
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

Citation Download Citation

Bruce C. Bigelow, Alan M. Dressler, Stephen A. Shectman, and Harland W. Epps "IMACS: the multiobject spectrograph and imager for the Magellan I telescope", Proc. SPIE 3355, Optical Astronomical Instrumentation, (9 July 1998); https://doi.org/10.1117/12.316760

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