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Proceedings Paper

Simulations of the extreme adaptive optics system for EPICS
Author(s): Visa Korkiakoski; Christophe Verinaud
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Paper Abstract

EPICS is a project for a high contrast imaging instrument dedicated to direct imaging of exoplanets with the European Extremely Large Telescope. Its conceptual design study phase has finished at the early 2010, and we show here its end-to-end extreme adaptive optics simulation results. The simulations have been made using conventional, well-known but numerically intensive computation techniques (full Fourier diffraction model of a WFS and wavefront reconstruction with matrix-vector-multiplication). Many error sources important for XAO are considered: chromaticity effects, M1 segment mis-figure, pupil rotation, WFS misregistration, telescope jitter and spiders. The results confirm that a raw contrast of 10-5 is reached at 20 mas, and 10-7-10-6 at 200-500 mas. This is in agreement with our analytic estimations and EPICS top-level requirements.

Paper Details

Date Published: 27 July 2010
PDF: 14 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 773643 (27 July 2010); doi: 10.1117/12.857011
Show Author Affiliations
Visa Korkiakoski, Utrecht Univ. (Netherlands)
Christophe Verinaud, Lab. d'Astrophysique de l'Observatoire de Grenoble (France)

Published in SPIE Proceedings Vol. 7736:
Adaptive Optics Systems II
Brent L. Ellerbroek; Michael Hart; Norbert Hubin; Peter L. Wizinowich, Editor(s)

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