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Proceedings Paper

Seeing within the fractional Brownian motion model for the turbulent wave-front phase
Author(s): Luciano Zunino; Darío G. Pérez; Mario Garavaglia
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Paper Abstract

We have previously modeled the turbulent wave-front phase by using a fractional Brownian motion (J. Opt. Soc. Am. A, Vol. 21, N° 10, pp. 1962-1969, October 2004). Non-Kolmogorov turbulence is primarily considered within this approach. Now, in this work we study the relationship between seeing, usual measure of quality associated to a groundbased telescope, and Hurst exponent, characteristic parameter of a fractional Brownian motion. The theory behind the differential image motion monitor (DIMM), a standard and widely used instrument for seeing measurements, is reviewed by us. It is shown that there is a direct connection between both parameters. Thus, it is concluded that Hurst exponent is a quantifier of the atmospheric turbulent state.

Paper Details

Date Published: 1 November 2006
PDF: 6 pages
Proc. SPIE 6522, Thirteenth Joint International Symposium on Atmospheric and Ocean Optics/ Atmospheric Physics, 65220K (1 November 2006); doi: 10.1117/12.723045
Show Author Affiliations
Luciano Zunino, Ctr. de Investigaciones Ópticas (Argentina)
Univ. Nacional de La Plata (Argentina)
Darío G. Pérez, Pontificia Univ. Católica de Valparaíso (Chile)
Mario Garavaglia, Ctr. de Investigaciones Ópticas (Argentina)
Univ. Nacional de La Plata (Argentina)


Published in SPIE Proceedings Vol. 6522:
Thirteenth Joint International Symposium on Atmospheric and Ocean Optics/ Atmospheric Physics

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