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Proceedings Paper

Subaru Coronagraphic eXtreme Adaptive Optics: on-sky performance of the asymmetric pupil Fourier wavefront sensor
Author(s): Frantz Martinache; Nemanja Jovanovic; Olivier Guyon
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Paper Abstract

The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument relies on a technique known as the asymmetric pupil Fourier wavefront sensor (APF-WFS) to compensate for the non-common path error that affects the performance of high contrast imaging instruments. The APF-WFS is a powerful tool that senses the wavefront at the level of the science detector, and leads to unbiased wavefront estimates. This paper presents the latest status, linearity properties and reports on the on-sky performance of this sensor, as it is implemented on SCExAO, used to control low-order Zernike modes in a close-loop system.

Paper Details

Date Published: 27 July 2016
PDF: 5 pages
Proc. SPIE 9909, Adaptive Optics Systems V, 990954 (27 July 2016); doi: 10.1117/12.2233475
Show Author Affiliations
Frantz Martinache, Lab. Lagrange, Observatoire de la Côte d'Azur (France)
NAOJ, Subaru Telescope (United States)
Nemanja Jovanovic, NAOJ, Subaru Telescope (United States)
Macquarie Univ. (Australia)
Olivier Guyon, NAOJ, Subaru Telescope (United States)
College of Optical Sciences, Univ. of Arizona (United States)
Astrobiology Ctr. of NINS (Japan)

Published in SPIE Proceedings Vol. 9909:
Adaptive Optics Systems V
Enrico Marchetti; Laird M. Close; Jean-Pierre Véran, Editor(s)

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