Focal plane wavefront sensing and control strategies for high-contrast imaging on the MagAO-X instrument
Creators
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1.
University of Arizona
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2.
University of Hawaii at Hilo
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3.
Astrobiology Center
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4.
Leiden University
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5.
California Institute of Technology
Contributors
Abstract
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.
Additional Information
© 2018 Society of Photo-optical Instrumentation Engineers (SPIE). This work was supported [in part] by NSF MRI Award #1625441 (MagAO-X).Attached Files
Published - 107031T.pdf
Submitted - 1807.04381.pdf
Files
107031T.pdf
Additional details
Identifiers
- Eprint ID
- 91394
- Resolver ID
- CaltechAUTHORS:20181203-100625314
Related works
- Describes
- https://arxiv.org/abs/1807.04381 (URL)
Funding
- NSF
- AST-1625441
Dates
- Created
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2018-12-03Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
Caltech Custom Metadata
- Series Name
- Proceedings of SPIE
- Series Volume or Issue Number
- 10703