Journal Article

Site testing at astronomical sites: evaluation of seeing using satellite-based data

S. Cavazzani, S. Ortolani and V. Zitelli

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 419, issue 4, pages 3081-3091
Published in print February 2012 | ISSN: 0035-8711
Published online January 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2011.19949.x
Site testing at astronomical sites: evaluation of seeing using satellite-based data

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We present, for the first time, a new method to estimate seeing using remote sounding from the infrared night-time data of the Geostationary Operational Environmental Satellite 12. We discuss the correlation found between the ground-based data and the satellite-derived values from the analysis of the sites located at Cerro Paranal (Chile) and Roque de los Muchachos (Canary Islands, Spain). We obtain a ground–satellite correlation percentage of about 90 per cent. Finally, by studying the correlation between the data from the afternoon and the following night, we are able to provide a forecast for the photometric night quality.

Keywords: turbulence; atmospheric effects; methods: statistical; site testing

Journal Article.  5930 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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