15 July 2008 Turbulence profiling using wide field of view Hartmann-Shack wavefront sensors
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Abstract
Solar telescopes equipped with wide field of view Hartmann-Shack wavefront sensors (WFWFS) can be used to measure the vertical distribution of optical turbulence strength at daytime.1 The method is based on the computation of the angular covariance of local image displacements within the subapertures of the WFWFS, similar to the SLODAR method which is used at nighttime telescopes.2 In this paper the basic principles of the method are summarized, and practical limitations are shown. Moreover, the influence of compensating ground-layer turbulence with a single conjugated adaptive optics system (SCAO) on the angular covariance functions is modeled.
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T. A. Waldmann, T. A. Waldmann, T. Berkefeld, T. Berkefeld, O. von der Lühe, O. von der Lühe, } "Turbulence profiling using wide field of view Hartmann-Shack wavefront sensors", Proc. SPIE 7015, Adaptive Optics Systems, 70155O (15 July 2008); doi: 10.1117/12.789553; https://doi.org/10.1117/12.789553
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