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Optics Letters

Optics Letters


  • Vol. 28, Iss. 10 — May. 15, 2003
  • pp: 798–800

Experimental validation of Fourier-transform wave-front reconstruction at the Palomar Observatory

Lisa A. Poyneer, Mitchell Troy, Bruce Macintosh, and Donald T. Gavel  »View Author Affiliations

Optics Letters, Vol. 28, Issue 10, pp. 798-800 (2003)

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Wave-front reconstruction with use of the Fourier transform has been validated through theory and simulation. This method provides a dramatic reduction in computational costs for large adaptive (AO) systems. Because such a reconstructor can be expressed as a matrix, it can be used as an alternative in a matrix-based AO control system. This was done with the Palomar Observatory AO system on the 200-in. Hale telescope. Results of these tests indicate that Fourier-transform wave-front reconstruction works in a real system. For both bright and dim stars, a Hudgin-geometry Fourier-transform method produced performance comparable to that of the Palomar Adaptive Optics least squares. The Fried-geometry method had a noticeable Strehl ratio performance degradation of 0.043 in the K band (165-nm rms wave-front error added in quadrature) on a dim star.

© 2003 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(350.1270) Other areas of optics : Astronomy and astrophysics

Lisa A. Poyneer, Mitchell Troy, Bruce Macintosh, and Donald T. Gavel, "Experimental validation of Fourier-transform wave-front reconstruction at the Palomar Observatory," Opt. Lett. 28, 798-800 (2003)

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