Share Email Print
cover

Proceedings Paper

Phase estimation for large field of view: application to multiconjugate adaptive optics
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We propose a `Maximum A Posteriori-based' estimation of the turbulent phase in a large field of view (FOV) to overcome the anisoplanatism limitation in adaptive optics. We show that, whatever the true atmospheric profile, a small number of equivalent layers (2 or 3) is required to obtain an accurate restitution of the phase in the whole FOV. The implications on multiconjugate adaptive optics are discussed in terms of number and conjugated heights of the deformable mirrors. The number of guide stars for the wavefront measurements in the field is also discussed: 3 (or even 2) guide stars are sufficient to obtain good performance.

Paper Details

Date Published: 5 October 1999
PDF: 9 pages
Proc. SPIE 3763, Propagation and Imaging through the Atmosphere III, (5 October 1999); doi: 10.1117/12.363606
Show Author Affiliations
Thierry Fusco, Office National d'Etudes et de Recherches Aerospatiales (France)
Jean-Marc Conan, Office National d'Etudes et de Recherches Aerospatiales (France)
Vincent Michau, Office National d'Etudes et de Recherches Aerospatiales (France)
Laurent M. Mugnier, Office National d'Etudes et de Recherches Aerospatiales (France)
Gerard Rousset, Office National d'Etudes et de Recherches Aerospatiales (France)


Published in SPIE Proceedings Vol. 3763:
Propagation and Imaging through the Atmosphere III
Michael C. Roggemann; Luc R. Bissonnette, Editor(s)

© SPIE. Terms of Use
Back to Top