Wavefront reconstruction methods for a natural guide star adaptive optics application to the Keck Telescope

Details Wavefront reconstruction methods for a natural guide star adaptive optics application to the Keck Telescope Wavefront reconstruction methods for a natural guide star adaptive optics application to the Keck Telescope

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2201..666m&link_type=abstract

Proc. SPIE Vol. 2201, p. 666-677, Adaptive Optics in Astronomy, Mark A. Ealey; Fritz Merkle; Eds.

Physics

Optics

Scientific paper

This paper investigates and compares wavefront sensing options for a proposed natural guide star adaptive optics upgrade for the Keck telescope. The methods of curvature sensing and slope sensing with a Hartmann sensor are compared. A curvature sensor model is developed that includes nonlinear, diffraction, and noise effects. The analytical model is validated in simulation using the Keck optical prescription parameters. A comprehensive treatment of estimation/reconstruction is presented and used for the Hartmann sensor/curvature sensor comparisons.

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