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Performance and sensitivity of vortex coronagraphs on segmented space telescopes

Ruane, Garreth and Mawet, Dimitri and Jewell, Jeffrey and Shaklan, Stuart (2017) Performance and sensitivity of vortex coronagraphs on segmented space telescopes. In: Techniques and Instrumentation for Detection of Exoplanets VIII. Proceedings of SPIE. No.10400. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 104000J. ISBN 9781510612570.

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The detection of molecular species in the atmospheres of earth-like exoplanets orbiting nearby stars requires an optical system that suppresses starlight and maximizes the sensitivity to the weak planet signals at small angular separations. Achieving sufficient contrast performance on a segmented aperture space telescope is particularly challenging due to unwanted diffraction within the telescope from amplitude and phase discontinuities in the pupil. Apodized vortex coronagraphs are a promising solution that theoretically meet the performance needs for high contrast imaging with future segmented space telescopes. We investigate the sensitivity of apodized vortex coronagraphs to the expected aberrations, including segment co-phasing errors in piston and tip/tilt as well as other low-order and mid-spatial frequency aberrations. Coronagraph designs and their associated telescope requirements are identified for conceptual HabEx and LUVOIR telescope designs.

Item Type:Book Section
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URLURL TypeDescription Paper
Ruane, Garreth0000-0003-4769-1665
Mawet, Dimitri0000-0002-8895-4735
Additional Information:© 2017 SPIE. We thank Matthew Bolcar (NASA GSFC) for providing information regarding the LUVOIR telescope concept as well as Laurent Pueyo (STScI) and Kevin Fogarty (JHU) for fruitful discussion regarding optimal vortex coronagraph designs. G. Ruane is supported by an NSF Astronomy and Astrophysics Postdoctoral Fellowship under award AST-1602444. This work was supported by the Exoplanet Exploration Program (ExEP), Jet Propulsion Laboratory, California Institute of Technology, under contract to NASA.
Group:Infrared Processing and Analysis Center (IPAC), Astronomy Department
Funding AgencyGrant Number
NSF Astronomy and Astrophysics FellowshipAST-1602444
Subject Keywords:High contrast imaging, instrumentation, exoplanets, direct detection, coronagraphs
Series Name:Proceedings of SPIE
Issue or Number:10400
Record Number:CaltechAUTHORS:20171004-141719560
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Official Citation:Garreth Ruane, Dimitri Mawet, Jeffrey Jewell, Stuart Shaklan, "Performance and sensitivity of vortex coronagraphs on segmented space telescopes", Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000J (1 September 2017); doi: 10.1117/12.2274508;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:82070
Deposited By: Joy Painter
Deposited On:05 Oct 2017 17:10
Last Modified:15 Nov 2021 19:48

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