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dc.contributor.authorPotier, Axel
dc.contributor.authorRuane, Garreth
dc.contributor.authorTajdaran, Kiarash
dc.contributor.authorStark, Chris
dc.contributor.authorChen, Pin
dc.contributor.authorDewell, Larry
dc.contributor.authorJuanola-Parramon,  Roser
dc.contributor.authorNordt, Alison
dc.contributor.authorPueyo,  Laurent
dc.contributor.authorRedding, David
dc.contributor.authorRiggs,  A J Eldorado
dc.contributor.authorSirbu, Dan
dc.date.accessioned2022-09-16T16:54:36Z
dc.date.available2022-09-16T16:54:36Z
dc.date.issued2022-08-17
dc.description.abstractThe Astro2020 decadal survey recommended an infrared, optical, ultra-violet (IR/O/UV) telescope with a ∼6 m inscribed diameter and equipped with a coronagraph instrument to directly image exoEarths in the habitable zone of their host star. A telescope of such size may need to be segmented to be folded and then carried by current launch vehicles. However, a segmented primary mirror introduces the potential for additional mid spatial frequency optical wavefront instabilities during the science operations that would degrade the coronagraph performance. A coronagraph instrument with a wavefront sensing and control (WS&C) system can stabilize the wavefront with a picometer precision at high temporal frequencies (>1Hz). In this work, we study a realistic set of aberrations based on a finite element model of a slightly larger (8m circumscribed, 6.7m inscribed diameter) segmented telescope with its payload. We model an adaptive optics (AO) system numerically to compute the post-AO residuals. The residuals then feed an end-to-end model of a vortex coronagraph instrument. We report the long exposure contrast and discuss the overall benefits of the adaptive optics system in the flagship mission success.en_US
dc.description.sponsorshipThe research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (80NM0018D0004).en_US
dc.description.urihttps://arxiv.org/abs/2208.08553en_US
dc.format.extent6 pagesen_US
dc.genrejournal articlesen_US
dc.genrepreprintsen_US
dc.identifierdoi:10.13016/m2o7ap-fefd
dc.identifier.urihttps://doi.org/10.48550/arXiv.2208.08553
dc.identifier.urihttp://hdl.handle.net/11603/25700
dc.language.isoen_USen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleContrast performance of an 8m off-axis, segmented space telescope equipped with an adaptive optics systemen_US
dc.typeTexten_US


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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
Except where otherwise noted, this item's license is described as This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.