High-order wavefront sensing system for PALM-3000

Details High-order wavefront sensing system for PALM-3000 High-order wavefront sensing system for PALM-3000

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008spie.7015e.152b&link_type=abstract

Adaptive Optics Systems. Edited by Hubin, Norbert; Max, Claire E.; Wizinowich, Peter L. Proceedings of the SPIE, Volume 7015

Physics

Optics

3

Scientific paper

PALM-3000 is an upgrade to the current PALM-241 adaptive optics system at the 5.1 m Hale telescope which will allow diffraction-limited science in visible wavelengths using bright natural guide stars, have more modest performance with an upgraded Sodium laser guide star, and allow for guiding on faint natural guide stars. A key sub-system of the upgrade is a new high-order Shack-Hartmann wavefront sensor with selectable pupil sampling, up to 64 subapertures across the telescope aperture, to minimize wavefront reconstruction error for varying brightness of guide source with a frame rate up to 3 kHz. The design and current status of the high-order wavefront sensing system is presented.

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