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Applied Optics

Applied Optics


  • Vol. 43, Iss. 29 — Oct. 10, 2004
  • pp: 5458–5467

Performance of the Keck Observatory adaptive-optics system

Marcos A. van Dam, David Le Mignant, and Bruce A. Macintosh  »View Author Affiliations

Applied Optics, Vol. 43, Issue 29, pp. 5458-5467 (2004)

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The adaptive-optics (AO) system at the W. M. Keck Observatory is characterized. We calculate the error budget of the Keck AO system operating in natural guide star mode with a near-infrared imaging camera. The measurement noise and bandwidth errors are obtained by modeling the control loops and recording residual centroids. Results of sky performance tests are presented: The AO system is shown to deliver images with average Strehl ratios of as much as 0.37 at 1.58 μm when a bright guide star is used and of 0.19 for a magnitude 12 star. The images are consistent with the predicted wave-front error based on our error budget estimates.

© 2004 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(010.7350) Atmospheric and oceanic optics : Wave-front sensing

Original Manuscript: January 14, 2004
Revised Manuscript: April 29, 2004
Published: October 10, 2004

Marcos A. van Dam, David Le Mignant, and Bruce A. Macintosh, "Performance of the Keck Observatory adaptive-optics system," Appl. Opt. 43, 5458-5467 (2004)

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