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A New Standard for Assessing the Performance of High Contrast Imaging Systems

Jensen-Clem, Rebecca and Mawet, Dimitri and Gomez Gonzalez, Carlos A. and Absil, Olivier and Belikov, Ruslan and Currie, Thayne and Kenworthy, Matthew A. and Marois, Christian and Mazoyer, Johan and Ruane, Garreth and Tanner, Angelle and Cantalloube, Faustine (2018) A New Standard for Assessing the Performance of High Contrast Imaging Systems. Astronomical Journal, 155 (1). Art. No. 19. ISSN 1538-3881. doi:10.3847/1538-3881/aa97e4.

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As planning for the next generation of high contrast imaging instruments (e.g., WFIRST, HabEx, and LUVOIR, TMT-PFI, EELT-EPICS) matures and second-generation ground-based extreme adaptive optics facilities (e.g., VLT-SPHERE, Gemini-GPI) finish their principal surveys, it is imperative that the performance of different designs, post-processing algorithms, observing strategies, and survey results be compared in a consistent, statistically robust framework. In this paper, we argue that the current industry standard for such comparisons—the contrast curve—falls short of this mandate. We propose a new figure of merit, the "performance map," that incorporates three fundamental concepts in signal detection theory: the true positive fraction, the false positive fraction, and the detection threshold. By supplying a theoretical basis and recipe for generating the performance map, we hope to encourage the widespread adoption of this new metric across subfields in exoplanet imaging.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Jensen-Clem, Rebecca0000-0003-0054-2953
Mawet, Dimitri0000-0002-8895-4735
Gomez Gonzalez, Carlos A.0000-0003-2050-1710
Absil, Olivier0000-0002-4006-6237
Currie, Thayne0000-0002-7405-3119
Kenworthy, Matthew A.0000-0002-7064-8270
Marois, Christian0000-0002-4164-4182
Mazoyer, Johan0000-0002-9133-3091
Ruane, Garreth0000-0003-4769-1665
Tanner, Angelle0000-0002-2903-2140
Additional Information:© 2017. The American Astronomical Society. Received 2017 February 12; revised 2017 October 31; accepted 2017 October 31; published 2017 December 15. This work has been supported by the Keck Institute for Space Studies and the NASA Exoplanet Exploration Program Study Analysis Group #19: Exoplanet Imaging Signal Detection Theory and Rigorous Contrast Metrics. This material is based upon work supported by the National Science Foundation Graduate Research Fellowship under grant No. DGE-1144469. G.R. is supported by an NSF Astronomy and Astrophysics Postdoctoral Fellowship under award AST-1602444. C.G.G. and O.A. acknowledge funding from the European Research Council Under the European Union's Seventh Framework Program (ERC Grant Agreement No. 337569) and from the French Community of Belgium through an ARC grant for Concerted Research Action. Software: Vortex Image Processing (Gomez Gonzalez et al. 2017).
Group:Keck Institute for Space Studies, Astronomy Department
Funding AgencyGrant Number
Keck Institute for Space Studies (KISS)UNSPECIFIED
NSF Graduate Research FellowshipDGE-1144469
NSF Astronomy and Astrophysics FellowshipAST-1602444
European Research Council (ERC)337569
Communauté française de Belgique – Actions de recherche concertées – Académie universitaire Wallonie-EuropeUNSPECIFIED
Subject Keywords:methods: statistical; techniques: high angular resolution
Issue or Number:1
Record Number:CaltechAUTHORS:20180104-153536985
Persistent URL:
Official Citation:Rebecca Jensen-Clem et al 2018 AJ 155 19
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84107
Deposited By: George Porter
Deposited On:04 Jan 2018 23:53
Last Modified:15 Nov 2021 20:16

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