Comparative study of Shack-Hartmann configurations for atmospheric turbulence reconstructions in solar adaptive optics

The correction of the phase variations induced by the atmospheric turbulence is one of the most complex problems that an Adaptive Optics (AO) System must deal with, as it must calculate the properties of all the atmosphere traversed by the light from several measures taken by ground-based telescopes...

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Bibliographic Details
Published in:	Optics and lasers in engineering Vol. 158; p. 107157
Main Authors:	Riesgo, Francisco García, Gómez, Sergio Luis Suárez, Rodríguez, Jesús Daniel Santos, Gutiérrez, Carlos González, Hernando, Yolanda Martín, Martínez, Luz María Montoya, Ramos, Andrés Asensio, Vera, Manuel Collados, Cagigal, Miguel Núñez, Juez, Francisco Javier De Cos
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-11-2022
Subjects:	Adaptive optics Artificial intelligence Atmospheric turbulence Deep learning Fully-Convolutional Neural Networks Neural networks Shack-Hartmann Deep learning Shack-Hartmann Atmospheric turbulence Neural networks Adaptive optics Fully-Convolutional Neural Networks Artificial intelligence
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Summary:	The correction of the phase variations induced by the atmospheric turbulence is one of the most complex problems that an Adaptive Optics (AO) System must deal with, as it must calculate the properties of all the atmosphere traversed by the light from several measures taken by ground-based telescopes. Traditional reconstructors systems used in AO are based on computational algorithms where its reconstruction quality improves with the number of measures made by the telescopes’ sensors. That means that sensors are getting greater and greater with their corresponding higher financial expense. Artificial Intelligence (IA) has become in recent years a real alternative to traditional computational methods as reconstructors for AO systems. Fully-convolutional neural networks (FCNs) specifically have shown great performances working in Solar AO, demonstrating their ability to obtain a lot of valuable information from the recorded images for the wavefront phase evaluation. Along this research, the influence of the properties of the telescope's sensors and of the observations in the reconstructions made by the FCNs’ is measured, to obtain the configuration that best suits the performance of artificial neural networks (ANN). The presented results determine the way forward for the future sensors for telescopes with reconstruction systems based on ANNs, to obtain higher quality reconstructions employing fewer economic resources.
ISSN:	0143-8166 1873-0302
DOI:	10.1016/j.optlaseng.2022.107157