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Optica Publishing Group
  • Adaptive Optics: Analysis and Methods/Computational Optical Sensing and Imaging/Information Photonics/Signal Recovery and Synthesis Topical Meetings on CD-ROM
  • OSA Technical Digest (CD) (Optica Publishing Group, 2007),
  • paper ATuC1
  • https://doi.org/10.1364/AOPT.2007.ATuC1

MOSP : a new instrument to measure wavefront outer scale profiles

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Large scale wavefront properties are crucial when one wants to evaluate experimental performances of large aperture telescopes. Optimal designs of ELT and related AO systems can be improved by taking into account wavefront outer scale profiles. We retrieve the vertical distribution of wavefront outer scale by analysing angular correlation of wavefront Angle of Arrival fluctuations deduced from Moon’s limb image motion. We use simulated annealing algorithm to deduce the height dependence of the wavefront outer scale with given profiles simultaneously measured with the SCIDAR instrument. We present results obtained during two campaigns of observation at the Mauna Kea Observatory (Hawaii) and Observatoire de Haute Provence (France). Estimated outer scale profiles exhibit smaller values in the boundary layer than in the free atmosphere.

© 2007 Optical Society of America

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