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Proceedings Article

Optimization of a Shack-Hartmann-based wavefront sensor for XAO systems

[+] Author Affiliations
Thierry Fusco, Magalie Nicolle, Gerard Rousset, Vincent Michau

ONERA (France)

Jean-Luc Beuzit

Observatoire de Grenoble (France)

David Mouillet

Observatoire Midi-Pyrenees (France)

Proc. SPIE 5490, Advancements in Adaptive Optics, 1155 (October 25, 2004); doi:10.1117/12.549562
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From Conference Volume 5490

  • Advancements in Adaptive Optics
  • Kona, United States | June 21, 2004

abstract

Optimization of a Shack-Hartmann based WFS is proposed for XAO systems. Both aliasing effects and noise propagation issues is investigated in order to optimize the WFS device. In particular a new estimator of the spot position is proposed and characterized both analytically and using end-to-end simulations. Analytical expressions of the slope measurement errors is derived and the gain brought by our new Weighted Center of Gravity estimator is quantified.

© (2004) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Thierry Fusco ; Magalie Nicolle ; Gerard Rousset ; Vincent Michau ; Jean-Luc Beuzit, et al.
"Optimization of a Shack-Hartmann-based wavefront sensor for XAO systems", Proc. SPIE 5490, Advancements in Adaptive Optics, 1155 (October 25, 2004); doi:10.1117/12.549562; http://dx.doi.org/10.1117/12.549562


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