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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 22 — Aug. 1, 2006
  • pp: 5709–5715

Method of estimating time scales of the atmospheric piston and its application at Dome C (Antarctica)

Aglae Kellerer, Marc Sarazin, Vincent Coudé du Foresto, Karim Agabi, Eric Aristidi, and Tatyana Sadibekova  »View Author Affiliations

Applied Optics, Vol. 45, Issue 22, pp. 5709-5715 (2006)

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Analysis of the first interferometric fringes recorded at Dome C, Antarctica are presented. Measurements were taken 31 January and 1 February 2005 during daytime. Our purpose in performing the analysis was to measure temporal fluctuations of the atmospheric piston, which are critical for interferometers, and determine their sensitivity. These scales are derived through the motion of the image that is formed in the focal plane of a Fizeau interferometer. We could establish a lower limit to the coherence time by studying the decay rate of correlation between successive fringes. Coherence times are measured to be larger than 10   ms , i.e., at least three times higher than the median coherence time measured at the site of Paranal ( 3.3   ms ) .

© 2006 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: October 10, 2005
Revised Manuscript: April 20, 2006
Manuscript Accepted: May 12, 2006

Aglae Kellerer, Marc Sarazin, Vincent Coudé du Foresto, Karim Agabi, Eric Aristidi, and Tatyana Sadibekova, "Method of estimating time scales of the atmospheric piston and its application at Dome C (Antarctica)," Appl. Opt. 45, 5709-5715 (2006)

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