Retrieval of the atmospheric tip-tilt from laser guide stars: exploring the Time-delay method

Domenico Bonaccini Calia; Noelia Martínez Rey; Bernadett Stadler; Guido Agapito

doi:10.1117/12.3021197

28 August 2024 Retrieval of the atmospheric tip-tilt from laser guide stars: exploring the Time-delay method

Domenico Bonaccini Calia, Noelia Martínez Rey, Bernadett Stadler, Guido Agapito

Proceedings Volume 13097, Adaptive Optics Systems IX; 130971C (2024) https://doi.org/10.1117/12.3021197
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

As of today, Laser Guide Star adaptive optics can not measure the image motion induced by atmospheric turbulence. In this paper we review one of the proposed methods, never tested: the time-delay method. We will look at its application for the 1m class CaNaPy system, for the 8m class systems and potentially for extremely large telescopes. ESO and ESA are collaborating in this R&D, creating the CaNaPy-LASCA LGS-AO facility for both, Astrophysics and Optical Communications field experiments. We present the concept, its optimal setup, the potential difficulties of the time-delay method as well as the numerical simulations results when retrieving the atmospheric tip-tilt, for different telescope diameters, including the 8m+ class telescopes.

Conference Presentation

Citation Download Citation

Domenico Bonaccini Calia, Noelia Martínez Rey, Bernadett Stadler, and Guido Agapito "Retrieval of the atmospheric tip-tilt from laser guide stars: exploring the Time-delay method", Proc. SPIE 13097, Adaptive Optics Systems IX, 130971C (28 August 2024); https://doi.org/10.1117/12.3021197

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