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High-contrast spectroscopy testbed for segmented telescopes

Delorme, J. R. and Mawet, D. and Fucik, J. and Wallace, J. K. and Ruane, G. and Jovanovic, N. and Klimovich, N. S. and Llop Sayson, J. D. and Zhang, R. and Xin, Y. and Riddle, R. and Dekany, R. and Wang, J. and Choquet, É. and Xuan, W. and Echeverri, D. and Randolph, M. and Vasisht, G. and Mennesson, B. (2018) High-contrast spectroscopy testbed for segmented telescopes. In: Techniques and Instrumentation for Detection of Exoplanets VIII. Proceedings of SPIE. No.10400. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 104000X. ISBN 9781510612570.

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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 U.S. community with an academic facility to test components and techniques for high contrast imaging with future segmented ground-based telescope (TMT, E-ELT) and space-based telescopes (HabEx, LUVOIR). The HCST will be able to simulate segmented telescope geometries up to 1021 hexagonal segments and time-varying external wavefront disturbances. It also contains a wavefront corrector module based on two deformable mirrors followed by a classical 3-plane single-stage corona- graph (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 to characterize simulated planets at the photon-noise limit, 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.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Mawet, D.0000-0002-8895-4735
Ruane, G.0000-0003-4769-1665
Riddle, R.0000-0002-0387-370X
Wang, J.0000-0002-4361-8885
Choquet, É.0000-0002-9173-0740
Xuan, W.0000-0002-6618-1137
Echeverri, D.0000-0002-1583-2040
Vasisht, G.0000-0002-1871-6264
Mennesson, B.0000-0003-4205-4800
Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). The authors would like to acknowledge the financial support of the Heising-Simons foundation. G. Ruane is supported by an NSF Astronomy and Astrophysics Postdoctoral Fellowship under award AST-1602444. This work was also supported by the Exoplanet Exploration Program (ExEP), Jet Propulsion Laboratory, California Institute of Technology, under contract to NASA. Finally, we would like to thank Rowan Swain for proofreading the manuscript.
Group:Astronomy Department
Funding AgencyGrant Number
Heising-Simons FoundationUNSPECIFIED
NSF Astronomy and Astrophysics FellowshipAST-1602444
Subject Keywords:Instrumentation, Testbed, Segmented Telescopes Simulator, High contrast imaging, Wavefront control, High Spectral Resolution, High Dispersion Coronagraphy
Series Name:Proceedings of SPIE
Issue or Number:10400
Record Number:CaltechAUTHORS:20180615-144222840
Persistent URL:
Official Citation:J. R. Delorme, D. Mawet, J. Fucik, J. K. Wallace, G. Ruane, N. Jovanovic, N. S. Klimovich, J. D. Llop Sayson, R. Zhang, Y. Xin, R. Riddle, R. Dekany, J. Wang, E. Choquet, W. Xuan, D. Echeverri, M. Randolph, G. Vasisht, B. Mennesson, "High-contrast spectroscopy testbed for segmented telescopes", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000X (22 January 2018); doi: 10.1117/12.2274893;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87166
Deposited By: George Porter
Deposited On:15 Jun 2018 22:49
Last Modified:10 Oct 2019 22:11

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