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27 April 2024

» arxiv » astro-ph/0101474

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Simultaneous Measurements of the Fried Parameter r_0 and the Isoplanatic Angle theta_0 using SCIDAR and Adaptive Optics - First Results
A.R. Weiss ; S. Hippler ; M.E. Kasper ; N.J. Wooder ; J.C. Quartel ;
Date:	26 Dec 2000
Subject:	astro-ph
Abstract:	We present first results of a simultaneous atmospheric turbulence measurement campaign at the Calar Alto (Spain) 1.23m and 3.5m telescopes. A SCIDAR instrument and the Calar Alto Adaptive Optics system ALFA were used at the 1.23m and 3.5m telescopes respectively to determine essential turbulence parameters like the Fried parameter r_0, the isoplanatic angle theta_0, and, in the case of SCIDAR, the C_n^2 profile of the atmosphere. Both closed-loop and open-loop data were obtained with ALFA. The desired parameters were then calculated from this. This paper shows a comparison of the results obtained from the two different systems for several times during a period of three nights.
Source:	arXiv, astro-ph/0101474
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