CaltechAUTHORS
Published July 10, 2018 | Version Published + Submitted
Book Section - Chapter Open

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

Creators

  • 1. ROR icon University of Arizona
  • 2. ROR icon University of Hawaii at Hilo
  • 3. ROR icon Astrobiology Center
  • 4. ROR icon Leiden University
  • 5. ROR icon 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

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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
2018-12-03
Created from EPrint's datestamp field
Updated
2021-11-16
Created from EPrint's last_modified field

Caltech Custom Metadata

Series Name
Proceedings of SPIE
Series Volume or Issue Number
10703