28 July 2014 The G-CLEF spectrograph optical design
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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.
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Gábor Fűrész, Gábor Fűrész, Harland Epps, Harland Epps, Stuart Barnes, Stuart Barnes, William Podgorski, William Podgorski, Andrew Szentgyorgyi, Andrew Szentgyorgyi, Mark Mueller, Mark Mueller, Daniel Baldwin, Daniel Baldwin, Jacob Bean, Jacob Bean, Henry Bergner, Henry Bergner, Moo-Young Chun, Moo-Young Chun, Jeffrey Crane, Jeffrey Crane, Janet Evans, Janet Evans, Ian Evans, Ian Evans, Jeff Foster, Jeff Foster, Thomas Gauron, Thomas Gauron, Dani Guzman, Dani Guzman, Edward Hertz, Edward Hertz, Andres Jordán, Andres Jordán, Kang-Min Kim, Kang-Min Kim, Kenneth McCracken, Kenneth McCracken, Timothy Norton, Timothy Norton, Mark Ordway, Mark Ordway, Chan Park, Chan Park, Sang Park, Sang Park, Dave Plummer, Dave Plummer, Alan Uomoto, Alan Uomoto, In-Soo Yuk, In-Soo Yuk, } "The G-CLEF spectrograph optical design", Proc. SPIE 9147, Ground-based and Airborne Instrumentation for Astronomy V, 91479G (28 July 2014); doi: 10.1117/12.2057153; https://doi.org/10.1117/12.2057153
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