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Proceedings Paper

LuSci: a lunar scintillometer to study ground layer turbulence
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Paper Abstract

We present a new lunar scintillometer, LuSci. A simple and accurate way to determine the Ground Layer (GL) turbulence profile is through measuring lunar and solar scintillation. The contribution of the first 10-100 m to the total seeing is usually significant. Measuring the seeing in this GL is important to evaluate sites, especially to set the height of future domes and to translate existing seeing data to higher domes. This holds in particular to Antarctic sites where the GL seeing is dominant, with obvious implications for AO and interferometry. We develop robust methods for turbulence profile restoration from LuSci data, incorporating the effect of lunar phases. We present restored profiles from initial campaigns. We also extract a simple model for the wind profile from the rich information present in the scintillation spectrum.

Paper Details

Date Published: 28 July 2008
PDF: 9 pages
Proc. SPIE 7013, Optical and Infrared Interferometry, 70131P (28 July 2008); doi: 10.1117/12.789042
Show Author Affiliations
Jayadev Rajagopal, NOAO/CTIO (Chile)
A. Tokovinin, NOAO/CTIO (Chile)
E. Bustos, NOAO/CTIO (Chile)
J. Sebag, NOAO (United States)

Published in SPIE Proceedings Vol. 7013:
Optical and Infrared Interferometry
Markus Schöller; William C. Danchi; Françoise Delplancke, Editor(s)

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