Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting

Dario Del Moro; Roberto Piazzesi; Marco Stangalini; Luca Giovannelli; Francesco Berrilli

doi:10.1117/1.JATIS.1.1.019002

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2 December 2014 Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting

Dario Del Moro, Roberto Piazzesi, Marco Stangalini, Luca Giovannelli, Francesco Berrilli

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J. of Astronomical Telescopes, Instruments, and Systems, 1(1), 019002 (2014). https://doi.org/10.1117/1.JATIS.1.1.019002

Abstract

The FORS (closed loop forecasting system) control algorithm has been already successfully applied to improve the efficiency of a simulated adaptive optics (AO) system. To test its performance in real conditions, we implemented this algorithm in a hardware AO demonstrator, introducing controlled aberrations into the system. We present here the results of introducing into the system both a simple periodic defocus aberration and a real open loop defocus time sequence acquired at the vacuum tower telescope solar telescope. In both cases, FORS yields a significant performance increase, improving the stability of the system in closed-loop conditions and decreasing the amplitude of the residual uncorrected wavefront aberrations.

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Dario Del Moro, Roberto Piazzesi, Marco Stangalini, Luca Giovannelli, and Francesco Berrilli "Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting," Journal of Astronomical Telescopes, Instruments, and Systems 1(1), 019002 (2 December 2014). https://doi.org/10.1117/1.JATIS.1.1.019002

Published: 2 December 2014

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