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Published January 22, 2018 | Version Published
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High-contrast spectroscopy testbed for segmented telescopes

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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 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.

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.

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Identifiers

Eprint ID
87166
Resolver ID
CaltechAUTHORS:20180615-144222840

Funding

Heising-Simons Foundation
NSF Astronomy and Astrophysics Fellowship
AST-1602444
NASA/JPL/Caltech

Dates

Created
2018-06-15
Created from EPrint's datestamp field
Updated
2021-11-15
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Caltech Custom Metadata

Caltech groups
Astronomy Department
Series Name
Proceedings of SPIE
Series Volume or Issue Number
10400