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Journal of Astronomical Telescopes, Instruments, and Systems

Improvements on adaptive optics control approaches: experimental tests of wavefront correction forecasting
Author(s): Dario Del Moro; Roberto Piazzesi; Marco Stangalini; Luca Giovannelli; Francesco Berrilli
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Paper 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.

Paper Details

Date Published: 2 December 2014
PDF: 8 pages
J. Ast. Inst. Sys. 1(1) 019002 doi: 10.1117/1.JATIS.1.1.019002
Published in: Journal of Astronomical Telescopes, Instruments, and Systems Volume 1, Issue 1
Show Author Affiliations
Dario Del Moro, Univ. degli Studi di Roma "Tor Vergata" (Italy)
Roberto Piazzesi, Univ. degli Studi di Roma "Tor Vergata" (Italy)
CNR-Istituto di Fotonica e Nanotecnologie (Italy)
Marco Stangalini, Univ. degli Studi di Roma "Tor Vergata" (Italy)
INAF - Osservatorio Astronomico di Roma (Italy)
Luca Giovannelli, Univ. degli Studi di Roma "Tor Vergata" (Italy)
Francesco Berrilli, Univ. degli Studi di Roma "Tor Vergata" (Italy)


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