Precision Thermal Control of the GMT-Consortium Large Earth Finder (G-CLEF)

Mueller, Mark; Baldwin, Daniel; Ben-Ami, Sagi; Durusky, Dan; Evans, Ian; Evans, Janet; Gauron, Tom; McCracken, Kenneth; McMuldroch, Stuart; Onyuksel, Cem; Park, Sang; Plummer, David; Podgorski, William; Szentgyorgyi, Andrew; Uomoto, Alan; Evans, CJ; Simard, L; Takami, H
2018
GROUND-BASED AND AIRBORNE INSTRUMENTATION FOR ASTRONOMY VII
DOI
10.1117/12.2314038
The GMT-Consortium Large Earth Finder (G-CLEF) will be part of the first generation instrumentation suite for the Giant Magellan Telescope (GMT). G-CLEF will be a general purpose optical passband echelle spectrograph with a precision radial velocity (PRV) capability of 10 cm/sec, a requirement necessary for the detection of Earth analogues. The instrument will be particularly sensitive to thermal effects and the necessary stability cannot be achieved through the use of low CTE materials alone. It is the combination of low CTE materials and exquisite thermal control which will enable the instrument to achieve its precision requirements.