Generalized seeing monitor (GSM): a dedicated monitor for wavefront optical parameter measurements

Aziz Ziad; Francois Martin; Rodolphe Conan; Julien Borgnino

doi:10.1117/12.371320

10 December 1999 Generalized seeing monitor (GSM): a dedicated monitor for wavefront optical parameter measurements

Aziz Ziad, Francois Martin, Rodolphe Conan, Julien Borgnino

Proceedings Volume 3866, Optics in Atmospheric Propagation and Adaptive Systems III; (1999) https://doi.org/10.1117/12.371320
Event: Remote Sensing, 1999, Florence, Italy

Abstract

The Generalized Seeing Monitor is a new instrument for the monitoring of the atmospheric optical parameters (AOP) like the spatial-coherence outer scale L₀, the seeing (epsilon) ₀ and the isoplanatic angle (theta)₀. This instrument, equipped with 4 identical modules, works like a Shack-Hartman and sensor and allows the analysis of the perturbed wavefront (observation of the angle-of-arrival fluctuations at four points. Several measurement campaigns have been done at different sites over the world: Cerro Paranal, La Silla, Cerro Pachon (Chile), Oukaimeden (Morocco) and Maydanak (Uzbekistan). The main results obtained for the AOP (L₀, (epsilon) ₀, (theta) ₀) during these missions are presented and discussed. The whole of these measurements provides an important data bank allowing the analysis of the temporal variability of these parameters.

Citation Download Citation

Aziz Ziad, Francois Martin, Rodolphe Conan, and Julien Borgnino "Generalized seeing monitor (GSM): a dedicated monitor for wavefront optical parameter measurements", Proc. SPIE 3866, Optics in Atmospheric Propagation and Adaptive Systems III, (10 December 1999); https://doi.org/10.1117/12.371320

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