Journal Article

Near-ground turbulence profiles from lunar scintillometer

A. Tokovinin, E. Bustos and A. Berdja

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 404, issue 3, pages 1186-1196
Published in print May 2010 | ISSN: 0035-8711
Published online May 2010 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2010.16367.x
Near-ground turbulence profiles from lunar scintillometer

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A simple and inexpensive six-channel array of photodiodes, LuSci, can measure weak moonlight scintillation produced by optical turbulence within few hundred metres above the ground. We describe the instrument, its operation and data reduction. Measured covariances of lunar scintillation are fitted to a smooth turbulence profile model with few parameters. Complete recipe for calculating the instrument response (including the effects of Moon's phases) is given. The robustness of the results relative to various experimental factors and model assumptions is investigated. We give examples of the data and compare LuSci with other turbulence profilers. LuSci finds numerous applications in nighttime site testing and monitoring.

Keywords: atmospheric effects; site testing

Journal Article.  8640 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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