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

Thierry Fusco; Magalie Nicolle; Gerard Rousset; Vincent Michau; Jean-Luc Beuzit; David Mouillet

doi:10.1117/12.549562

25 October 2004 Optimization of a Shack-Hartmann-based wavefront sensor for XAO systems

Thierry Fusco, Magalie Nicolle, Gerard Rousset, Vincent Michau, Jean-Luc Beuzit, David Mouillet

Proceedings Volume 5490, Advancements in Adaptive Optics; (2004) https://doi.org/10.1117/12.549562
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

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.

Citation Download Citation

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

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