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SCIDAR: an optical turbulence profiler for Dome A

Published online by Cambridge University Press:  30 January 2013

Li-Yong Liu
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, China email: liuly@nao.cas.cn Université de Nice-Sophia Antipolis, Observatoire de la Côte d'Azur, CNRS-UMR7293, Lab. Lagrange, Parc Valrose, 06108, Nice Cedex 2, France email: jean.vernin@unice.fr
Yong-Qiang Yao
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, China email: liuly@nao.cas.cn
Jean Vernin
Affiliation:
Université de Nice-Sophia Antipolis, Observatoire de la Côte d'Azur, CNRS-UMR7293, Lab. Lagrange, Parc Valrose, 06108, Nice Cedex 2, France email: jean.vernin@unice.fr
Merieme Chadid
Affiliation:
Université de Nice-Sophia Antipolis, Observatoire de la Côte d'Azur, CNRS-UMR7293, Lab. Lagrange, Parc Valrose, 06108, Nice Cedex 2, France email: jean.vernin@unice.fr
Hong-Shuai Wang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, China email: liuly@nao.cas.cn
Yi-Ping Wang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, China email: liuly@nao.cas.cn
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Abstract

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This paper introduces a plan to detect turbulence profiles at Dome A with a Single Star Scidar (SSS), to enhance our understanding of the characteristics of the site. The development of a portable monitor for profiling vertical atmospheric optical turbulence and wind speed is presented. By analyzing the spatial auto and cross-correlation functions of very short exposure images of single star scintillation patterns, the SSS can provide the vertical profiles of turbulence intensity C2n(h) and wind speed V(h). A SSS prototype is already operational at Ali in Tibet which will be improved in order to become fully robotic and adapted to extreme weather conditions that prevail at Dome A in Antarctica.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013

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