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Applied Optics

Applied Optics


  • Vol. 36, Iss. 30 — Oct. 20, 1997
  • pp: 7898–7905

Whole atmospheric-turbulence profiling with generalized scidar

Remy Avila, Jean Vernin, and Elena Masciadri  »View Author Affiliations

Applied Optics, Vol. 36, Issue 30, pp. 7898-7905 (1997)

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Statistical analysis of stellar scintillation on the pupil of a telescope, known as the scidar (scintillation, detection, and ranging) technique, is sensitive only to atmospheric turbulence at altitudes higher than a few kilometers. With the generalized scidar technique, recently proposed and tested under laboratory conditions, one can overcome this limitation by analyzing the scintillation on a plane away from the pupil. We report the first experimental implementation of this technique, to our knowledge, under real atmospheric conditions as a vertical profiler of the refractive-index structure constant CN2(h). The instrument was adapted to the Nordic Optical Telescope and the William Hershel Telescope at La Palma, Canary Islands. We measure the spatial autocorrelation function of double-star scintillation for different positions of the analysis plane, finding good agreement with theoretical expectations.

© 1997 Optical Society of America

Original Manuscript: February 24, 1997
Revised Manuscript: July 21, 1997
Published: October 20, 1997

Remy Avila, Jean Vernin, and Elena Masciadri, "Whole atmospheric-turbulence profiling with generalized scidar," Appl. Opt. 36, 7898-7905 (1997)

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