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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Stephen A. Burns
  • Vol. 26, Iss. 4 — Apr. 1, 2009
  • pp: 833–846

Experimental verification of the frozen flow atmospheric turbulence assumption with use of astronomical adaptive optics telemetry

Lisa Poyneer, Marcos van Dam, and Jean-Pierre Véran  »View Author Affiliations


JOSA A, Vol. 26, Issue 4, pp. 833-846 (2009)
http://dx.doi.org/10.1364/JOSAA.26.000833


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Abstract

We use closed-loop deformable mirror telemetry from Altair and Keck adaptive optics (AO) to determine whether atmospheric turbulence follows the frozen flow hypothesis. Using telemetry from AO systems, our algorithms (based on the predictive Fourier control framework) detect frozen flow > 94 % of the time. Usually one to three layers are detected. Between 20% and 40% of the total controllable phase power is due to frozen flow. Velocity vector RMS variability is less than 0.5 m s (per axis) on 10 - s intervals, indicating that the atmosphere is stable enough for predictive control to measure and adapt to prevailing atmospheric conditions before they change.

© 2009 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(010.7060) Atmospheric and oceanic optics : Turbulence

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: October 7, 2008
Revised Manuscript: November 26, 2008
Manuscript Accepted: December 1, 2008
Published: March 18, 2009

Citation
Lisa Poyneer, Marcos van Dam, and Jean-Pierre Véran, "Experimental verification of the frozen flow atmospheric turbulence assumption with use of astronomical adaptive optics telemetry," J. Opt. Soc. Am. A 26, 833-846 (2009)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-26-4-833

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