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High-contrast spectroscopy testbed for segmented telescopes (HCST) (Conference Presentation)
Author(s): Jacques-Robert Delorme; Dimitri Mawet; Jason Fucik; James K. Wallace; Garreth Ruane; Nikita S. Klimovich; Wenhao J. Xuan; Daniel Echeverri; Reed Riddle; Richard G. Dekany; Élodie Choquet; Ji Wang; Manxuan Zhang; Yeyuan Xin; Jorge Domingo Llop Sayson; Michael Randolph; Gautam Vasisht; Bertrand Mennesson

Paper Abstract

The High Contrast Spectroscopy Testbed for Segmented Telescopes (HCST) at Caltech is aimed at filling gaps in technology for future exoplanet imagers and providing the US community with an academic facility to test high contrast components and techniques for future segmented ground-based telescope (TMT, E-ELT) and space-based telescopes (LUVOIR, HDST, HabEx). The HCST is capable of simulating any segmented telescope geometry up to 1000 segments and time-varying external wavefront disturbances. It also contains a wavefront corrector module based on two deformable mirrors and a Zernike wavefront sensor followed by a classical 3-plane single-stage coronagraph (entrance apodizer, focal-plane mask, Lyot stop), and a science instrument. The back-end instrument will consist of an imaging detector and a high-resolution spectrograph, which is a unique feature of the HCST. The spectrograph instrument will utilize spectral information in exoplanet detection as a way to improve contrast down to the photon-noise limit as well as measure the chromaticity of new optimized coronagraph and wavefront control concepts, and test the overall scientific functions of high-resolution spectrographs on future segmented telescopes.

Paper Details

Date Published: 19 September 2017
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Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000X (19 September 2017); doi: 10.1117/12.2274893
Show Author Affiliations
Jacques-Robert Delorme, Caltech (United States)
Dimitri Mawet, California Institute of Technology (United States)
Jason Fucik, California Institute of Technology (United States)
James K. Wallace, Jet Propulsion Lab. (United States)
Garreth Ruane, California Institute of Technology (United States)
Nikita S. Klimovich, California Institute of Technology (United States)
Wenhao J. Xuan, Pomona College (United States)
Daniel Echeverri, Princeton Univ. (United States)
Reed Riddle, California Institute of Technology (United States)
Richard G. Dekany, California Institute of Technology (United States)
Élodie Choquet, Jet Propulsion Lab. (United States)
Ji Wang, California Institute of Technology (United States)
Manxuan Zhang, California Institute of Technology (United States)
Yeyuan Xin, California Institute of Technology (United States)
Jorge Domingo Llop Sayson, California Institute of Technology (United States)
Michael Randolph, California Polytechnic State Univ. (United States)
Gautam Vasisht, Jet Propulsion Lab. (United States)
Bertrand Mennesson, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 10400:
Techniques and Instrumentation for Detection of Exoplanets VIII
Stuart Shaklan, Editor(s)

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