Multiple field-of-view MCAO for a Large Solar Telescope: LOST simulations

TL;DR

This paper evaluates two innovative methods to reduce time delay errors in multi-field-of-view MCAO systems for large solar telescopes, using simulations and preliminary real data tests.

Contribution

It introduces and compares wavefront reconstruction optimization and wavefront forecasting techniques for solar MCAO systems.

Findings

Wavefront reconstruction optimization improves correction accuracy.

Wavefront forecasting offers potential for real-time correction.

Simulation results highlight the advantages and limitations of each method.

Abstract

In the framework of a 4m class Solar Telescope we studied the performance of the MCAO using the LOST simulation package. In particular, in this work we focus on two different methods to reduce the time delay error which is particularly critical in solar adaptive optics: a) the optimization of the wavefront reconstruction by reordering the modal base on the basis of the Mutual Information and b) the possibility of forecasting the wavefront correction through different approaches. We evaluate these techniques underlining pros and cons of their usage in different control conditions by analyzing the results of the simulations and make some preliminary tests on real data.