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Paving the Way to Future Missions: the Roman Space Telescope Coronagraph Technology Demonstration

Mennesson, B. and Juanola-Parramon, R. and Nemati, B. and Ruane, G. and Bailey, V. P. and Bolcar, M. and Martín, S. and Zimmerman, N. and Stark, C. and Pueyo, L. and Benford, D. and Cady, E. and Crill, B. and Douglas, E. and Gaudi, B. S. and Kasdin, J. and Kern, B. and Krist, J. and Kruk, J. and Luchik, T. and Macintosh, B. and Mandell, A. and Mawet, D. and Poberezhskiy, I. and Rhodes, J. and Riggs, A. J. and Turnbull, M. and Roberge, A. and Shi, F. and Siegler, N. and Stapelfeldt, K. and Ygouf, M. and Zellem, R. and Zhao, F. (2020) Paving the Way to Future Missions: the Roman Space Telescope Coronagraph Technology Demonstration. . (Unpublished)

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This document summarizes how far the Nancy Grace Roman Space Telescope Coronagraph Instrument (Roman CGI) will go toward demonstrating high-contrast imaging and spectroscopic requirements for potential future exoplanet direct imaging missions, illustrated by the HabEx and LUVOIR concepts. The assessment is made for two levels of assumed CGI performance: (i) current best estimate (CBE) as of August 2020, based on laboratory results and realistic end-to-end simulations with JPL-standard Model Uncertainty Factors (MUFs); (ii) CGI design specifications inherited from Phase B requirements. We find that the predicted performance (CBE) of many CGI subsystems compares favorably with the needs of future missions, despite providing more modest point source detection limits than future missions. This is essentially due to the challenging pupil of the Roman Space Telescope; this pupil pushes the coronagraph masks sensitivities to misalignments to be commensurate with future missions. In particular, CGI will demonstrate active low-order wavefront control and photon counting capabilities at levels of performance either higher than, or comparable to, the needs of future missions.

Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription Paper
Mennesson, B.0000-0003-4205-4800
Ruane, G.0000-0003-4769-1665
Bailey, V. P.0000-0002-5407-2806
Martín, S.0000-0001-9281-2919
Zimmerman, N.0000-0001-5484-1516
Pueyo, L.0000-0003-3818-408X
Benford, D.0000-0002-9884-4206
Cady, E.0000-0002-8789-2931
Crill, B.0000-0002-4650-8518
Gaudi, B. S.0000-0003-0395-9869
Macintosh, B.0000-0003-1212-7538
Mandell, A.0000-0002-8119-3355
Mawet, D.0000-0002-8895-4735
Rhodes, J.0000-0002-4485-8549
Riggs, A. J.0000-0002-0863-6228
Roberge, A.0000-0002-2989-3725
Stapelfeldt, K.0000-0002-2805-7338
Ygouf, M.0000-0001-7591-2731
Additional Information:Part of the research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. © 2020 California Institute of Technology. Government sponsorship acknowledged.
Group:Astronomy Department
Funding AgencyGrant Number
Record Number:CaltechAUTHORS:20200817-125215162
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104982
Deposited By: Tony Diaz
Deposited On:17 Aug 2020 20:14
Last Modified:17 Aug 2020 20:22

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