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Proceedings Paper

Dimensioning the Gravity adaptive optics wavefront sensor
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Paper Abstract

We present the adaptive optics simulations we have performed to dimension the Gravity adaptive optics wavefront sensor. We first computed the optimal WFS bandpass, depending on the sampling frequency, detector readout noise and reference source colour/temperature. We then performed adaptive optics simulations with the YAO simulation tool for different WFS parameters (number of subpupils, number of pixels per subpupil, loop frequency, reference source magnitude, etc). Results demonstrate that the Gravity adaptive optics top-level requirements can be fulfilled with a 9×9 subaperture Shack-Hartmann with 4 pixels per subaperture using an H+K filter, a larger filter being recommended for sources bluer than 770 K reference source of the Galactic Centre.

Paper Details

Date Published: 29 July 2010
PDF: 17 pages
Proc. SPIE 7736, Adaptive Optics Systems II, 77364A (29 July 2010); doi: 10.1117/12.856661
Show Author Affiliations
Y. Clénet, LESIA, CNRS, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
E, Gendron, LESIA, CNRS, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
G. Rousset, LESIA, CNRS, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
S, Hippler, Max-Planck-Institut für Astronomie (Germany)
F. Eisenhauer, Max-Planck-Institut für extraterrestrische Physik (Germany)
S. Gillessen, Max-Planck-Institut für extraterrestrische Physik (Germany)
G. Perrin, LESIA, CNRS, Observatoire de Paris à Meudon, Univ. Paris Diderot (France)
A. Amorim, Univ. de Lisboa (Portugal)
W. Brandner, Max-Planck-Institut für Astronomie (Germany)
K. Perraut, Lab. d'Astrophysique de Grenoble, CNRS, Univ. Joseph-Fourier (France)
C. Straubmeier, Univ. zu Köln (Germany)


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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