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Focal plane wavefront sensing and control strategies for high-contrast imaging on the MagAO-X instrument

Miller, Kelsey and Males, Jared R. and Guyon, Olivier and Close, Laird M. and Doelman, David and Snik, Frans and Por, Emiel and Wilby, Michael J. and Bohlman, Chris and Lumbres, Jennifer and Van Gorkom, Kyle and Kautz, Maggie and Rodack, Alexander and Knight, Justin and Jovanovic, Nemanja and Morzinski, Katie and Schatz, Lauren (2018) Focal plane wavefront sensing and control strategies for high-contrast imaging on the MagAO-X instrument. In: Adaptive Optics Systems VI. Proceedings of SPIE. No.10703. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 107031T. ISBN 9781510619593.

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The Magellan extreme adaptive optics (MagAO-X) instrument is a new extreme adaptive optics (ExAO) system designed for operation in the visible to near-IR which will deliver high contrast-imaging capabilities. The main AO system will be driven by a pyramid wavefront sensor (PyWFS); however, to mitigate the impact of quasi-static and non-common path (NCP) aberrations, focal plane wavefront sensing (FPWFS) in the form of low-order wavefront sensing (LOWFS) and spatial linear dark field control (LDFC) will be employed behind a vector apodizing phase plate (vAPP) coronagraph using rejected starlight at an intermediate focal plane. These techniques will allow for continuous high-contrast imaging performance at the raw contrast level delivered by the vAPP coronagraph 6 x 10^(-5). We present simulation results for LOWFS and spatial LDFC with a vAPP coronagraph, as well as laboratory results for both algorithms implemented with a vAPP coronagraph at the University of Arizona Extreme Wavefront Control Lab.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Guyon, Olivier0000-0002-1097-9908
Close, Laird M.0000-0002-2167-8246
Additional Information:© 2018 Society of Photo-optical Instrumentation Engineers (SPIE). This work was supported [in part] by NSF MRI Award #1625441 (MagAO-X).
Funding AgencyGrant Number
Subject Keywords:direct exoplanet imaging, high-contrast imaging, modal wavefront sensing (MWFS), wavefront control, low-order wavefront sensing (LOWFS), spatial linear dark field control (LDFC), vector apodizing phase plate (vAPP), MagAO-X
Series Name:Proceedings of SPIE
Issue or Number:10703
Record Number:CaltechAUTHORS:20181203-100625314
Persistent URL:
Official Citation:Kelsey Miller, Jared R. Males, Olivier Guyon, Laird M. Close, David Doelman, Frans Snik, Emiel Por, Michael J. Wilby, Chris Bohlman, Jennifer Lumbres, Kyle Van Gorkom, Maggie Kautz, Alexander Rodack, Justin Knight, Nemanja Jovanovic, Katie Morzinski, Lauren Schatz, "Focal plane wavefront sensing and control strategies for high-contrast imaging on the MagAO-X instrument", Proc. SPIE 10703, Adaptive Optics Systems VI, 107031T (10 July 2018); doi: 10.1117/12.2312809
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91394
Deposited By: Tony Diaz
Deposited On:03 Dec 2018 19:43
Last Modified:16 Nov 2021 03:41

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