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Proceedings Paper

The G-CLEF spectrograph optical design
Author(s): Gábor Fűrész; Harland Epps; Stuart Barnes; William Podgorski; Andrew Szentgyorgyi; Mark Mueller; Daniel Baldwin; Jacob Bean; Henry Bergner; Moo-Young Chun; Jeffrey Crane; Janet Evans; Ian Evans; Jeff Foster; Thomas Gauron; Dani Guzman; Edward Hertz; Andres Jordán; Kang-Min Kim; Kenneth McCracken; Timothy Norton; Mark Ordway; Chan Park; Sang Park; Dave Plummer; Alan Uomoto; In-Soo Yuk
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Paper Abstract

The GMT-Consortium Large Earth Finder (G-CLEF) is a fiber fed, optical echelle spectrograph, which has been selected as a first light instrument for the Giant Magellan Telescope (GMT) currently under construction at the Las Campanas Observatory. We designed G-CLEF as a general-purpose echelle spectrograph with a precision radial velocity (PRV) capability goal of 0.1 m/s, which will enable it to detect/measure the mass of an Earth-sized planet orbiting a Solar-type star in its habitable zone. This goal imposes challenging requirements on all aspects of the instrument and some of those are best incorporated directly into the optical design process. In this paper we describe the preliminary optical design of the G-CLEF instrument and briefly describe some novel solutions we have introduced into the asymmetric white pupil echelle configuration.

Paper Details

Date Published: 28 July 2014
PDF: 9 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91479G (28 July 2014); doi: 10.1117/12.2057153
Show Author Affiliations
Gábor Fűrész, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Harland Epps, Univ. of California Observatories, Lick Observatory (United States)
Univ. of California Santa Cruz (United States)
Stuart Barnes, Stuart Barnes Optical Design (Netherlands)
William Podgorski, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Andrew Szentgyorgyi, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Mark Mueller, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Daniel Baldwin, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Jacob Bean, The Univ. of Chicago (United States)
Henry Bergner, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Moo-Young Chun, Korea Astronomy and Space Science Institute (Korea, Republic of)
Jeffrey Crane, Carnegie Observatories (United States)
Janet Evans, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Ian Evans, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Jeff Foster, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Thomas Gauron, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Dani Guzman, Pontificia Univ. Católica de Chile (Chile)
Edward Hertz, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Andres Jordán, Pontificia Univ. Catolica de Chile (Chile)
Kang-Min Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Kenneth McCracken, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Timothy Norton, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Mark Ordway, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Chan Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Sang Park, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Dave Plummer, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Alan Uomoto, Carnegie Observatories (United States)
In-Soo Yuk, Korea Astronomy and Space Science Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 9147:
Ground-based and Airborne Instrumentation for Astronomy V
Suzanne K. Ramsay; Ian S. McLean; Hideki Takami, Editor(s)

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