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Proceedings Paper

Results from the PALM-3000 high-order adaptive optics system
Author(s): Jennifer E. Roberts; Richard G. Dekany; Rick S. Burruss; Christoph Baranec; Antonin Bouchez; Ernest E. Croner; Stephen R. Guiwits; David D. S. Hale; John R. Henning; Dean L. Palmer; Mitchell Troy; Tuan N. Truong; Jeffry Zolkower
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Paper Abstract

The first of a new generation of high actuator density AO systems developed for large telescopes, PALM-3000 is optimized for high-contrast exoplanet science but will support operation with natural guide stars as faint as V ~ 18. PALM-3000 began commissioning in June 2011 on the Palomar 200" telescope and has to date over 60 nights of observing. The AO system consists of two Xinetics deformable mirrors, one with 66 by 66 actuators and another with 21 by 21 actuators, a Shack-Hartman WFS with four pupil sampling modes (ranging from 64 to 8 samples across the pupil), and a full vector matrix multiply real-time system capable of running at 2KHz frame rates. We present the details of the completed system, and initial results. Operating at 2 kHz with 8.3cm pupil sampling on-sky, we have achieved a K-band Strehl ratio as high as 84% in ~1.0 arcsecond visible seeing.

Paper Details

Date Published: 13 September 2012
PDF: 8 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84470Y (13 September 2012); doi: 10.1117/12.926477
Show Author Affiliations
Jennifer E. Roberts, Jet Propulsion Lab. (United States)
Richard G. Dekany, Caltech Optical Observatories (United States)
Rick S. Burruss, Jet Propulsion Lab. (United States)
Christoph Baranec, Caltech Optical Observatories (United States)
Antonin Bouchez, Giant Magellan Telescope Organization Corp. (United States)
Ernest E. Croner, Caltech Optical Observatories (United States)
Stephen R. Guiwits, Caltech Optical Observatories (United States)
David D. S. Hale, Caltech Optical Observatories (United States)
John R. Henning, Palomar Observatory, California Institute of Technology (United States)
Dean L. Palmer, Jet Propulsion Lab. (United States)
Mitchell Troy, Jet Propulsion Lab. (United States)
Tuan N. Truong, Jet Propulsion Lab. (United States)
Jeffry Zolkower, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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