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Proceedings Paper

A preliminary design for the GMT-Consortium Large Earth Finder (G-CLEF)
Author(s): Andrew Szentgyorgyi; Stuart Barnes; Jacob Bean; Bruce Bigelow; Antonin Bouchez; Moo-Young Chun; Jeffrey D. Crane; Harland Epps; Ian Evans; Janet Evans; Anna Frebel; Gabor Furesz; Alex Glenday; Dani Guzman; Tyson Hare; Bi-Ho Jang; Jeong-Gyun Jang; Ueejong Jeong; Andres Jordan; Kang-Min Kim; Jihun Kim; Chih-Hao Li; Mercedes Lopez-Morales; Kenneth McCracken; Brian McLeod; Mark Mueller; Jakyung Nah; Timothy Norton; Heeyoung Oh; Jae Sok Oh; Mark Ordway; Byeong-Gon Park; Chan Park; Sung-Joon Park; David Phillips; David Plummer; William Podgorski; Florian Rodler; Andreas Seifahrt; Kyung-Mo Tak; Alan Uomoto; Marcos A. Van Dam; Ronald Walsworth; Young Sam Yu; In-Soo Yuk
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Paper Abstract

The GMT-Consortium Large Earth Finder (G-CLEF) is an optical-band echelle spectrograph that has been selected as the first light instrument for the Giant Magellan Telescope (GMT). G-CLEF is a general-purpose, high dispersion spectrograph that is fiber fed and capable of extremely precise radial velocity measurements. The G-CLEF Concept Design (CoD) was selected in Spring 2013. Since then, G-CLEF has undergone science requirements and instrument requirements reviews and will be the subject of a preliminary design review (PDR) in March 2015. Since CoD review (CoDR), the overall G-CLEF design has evolved significantly as we have optimized the constituent designs of the major subsystems, i.e. the fiber system, the telescope interface, the calibration system and the spectrograph itself. These modifications have been made to enhance G-CLEF’s capability to address frontier science problems, as well as to respond to the evolution of the GMT itself and developments in the technical landscape. G-CLEF has been designed by applying rigorous systems engineering methodology to flow Level 1 Scientific Objectives to Level 2 Observational Requirements and thence to Level 3 and Level 4. The rigorous systems approach applied to G-CLEF establishes a well defined science requirements framework for the engineering design. By adopting this formalism, we may flexibly update and analyze the capability of G-CLEF to respond to new scientific discoveries as we move toward first light. G-CLEF will exploit numerous technological advances and features of the GMT itself to deliver an efficient, high performance instrument, e.g. exploiting the adaptive optics secondary system to increase both throughput and radial velocity measurement precision.

Paper Details

Date Published: 28 July 2014
PDF: 16 pages
Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 914726 (28 July 2014); doi: 10.1117/12.2056741
Show Author Affiliations
Andrew Szentgyorgyi, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Stuart Barnes, Stuart Barnes Optical Design (Netherlands)
Jacob Bean, The Univ. of Chicago (United States)
Bruce Bigelow, Giant Magellan Telescope Organization (United States)
Antonin Bouchez, Giant Magellan Telescope Organization (United States)
Moo-Young Chun, Korea Astronomy and Space Science Institute (Korea, Republic of)
Jeffrey D. Crane, Carnegie Observatories (United States)
Harland Epps, Lick Observatory, Univ. of California, Santa Cruz (United States)
Ian Evans, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Janet Evans, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Anna Frebel, MIT Kavli Institute for Astrophysics and Space Research (United States)
Gabor Furesz, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Alex Glenday, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Dani Guzman, Pontificia Univ. Católica de Chile (Chile)
Tyson Hare, Carnegie Observatories (United States)
Bi-Ho Jang, Korea Astronomy and Space Science Institute (Korea, Republic of)
Jeong-Gyun Jang, Korea Astronomy and Space Science Institute (Korea, Republic of)
Ueejong Jeong, Korea Astronomy and Space Science Institute (Korea, Republic of)
Andres Jordan, MIT Kavli Institute for Astrophysics and Space Research (United States)
Kang-Min Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Jihun Kim, Korea Astronomy and Space Science Institute (Korea, Republic of)
Chih-Hao Li, Stuart Barnes Optical Design (Netherlands)
Mercedes Lopez-Morales, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Kenneth McCracken, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Brian McLeod, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Mark Mueller, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Jakyung Nah, Korea Astronomy and Space Science Institute (Korea, Republic of)
Timothy Norton, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Heeyoung Oh, Korea Astronomy and Space Science Institute (Korea, Republic of)
Korea Univ. of Science and Technology (Korea, Republic of)
Jae Sok Oh, Korea Astronomy and Space Science Institute (Korea, Republic of)
Mark Ordway, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Byeong-Gon Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Korea Univ. of Science and Technology (Korea, Republic of)
Chan Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
Sung-Joon Park, Korea Astronomy and Space Science Institute (Korea, Republic of)
David Phillips, Harvard-Smithsonian Ctr. for Astrophysics (United States)
David Plummer, Harvard-Smithsonian Ctr. for Astrophysics (United States)
William Podgorski, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Florian Rodler, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Andreas Seifahrt, The Univ. of Chicago (United States)
Kyung-Mo Tak, Korea Astronomy and Space Science Institute (Korea, Republic of)
Alan Uomoto, Carnegie Observatories (United States)
Marcos A. Van Dam, Flat Wavefronts (New Zealand)
Ronald Walsworth, Harvard-Smithsonian Ctr. for Astrophysics (United States)
Young Sam Yu, Korea Astronomy and Space Science Institute (Korea, Republic of)
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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