Observation of astronomical objects by using an adaptive optical system with Rayleigh laser guide star

V. A. Bogachev; A. A. Vereshchagin; M. V. Volkov; S. G. Garanin; M. A. Glukhov; D. E. Guk; M. O. Koltygin; A. V. Kopalkin; R. S. Kuzin; S. M. Kulikov; F. A. Starikov

doi:10.1117/12.2603308

15 December 2021 Observation of astronomical objects by using an adaptive optical system with Rayleigh laser guide star

V. A. Bogachev, A. A. Vereshchagin, M. V. Volkov, S. G. Garanin, M. A. Glukhov, D. E. Guk, M. O. Koltygin, A. V. Kopalkin, R. S. Kuzin, S. M. Kulikov, F. A. Starikov

Author Affiliations +

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 1191617 (2021) https://doi.org/10.1117/12.2603308
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

The results of imaging system resolution enhancement of the astronomical objects by using a Rayleigh laser guide star (LGS) have been presented. Correction of the distortions of stellar optical image has been performed by the adaptive optical system. The numerical simulation of registration of radiation from the Rayleigh LGS by a Shack-Hartmann wavefront sensor has been carried out. It has been shown that accurate calculation and subtraction of magnitude of the defocus and tip-tilts allows mitigating the reconstruction error concerned with the finite distance to LGS and the angular position of the telescope. It has been demonstrated in the experiment that angular size of the natural star Scheat decreases by 3 times at the use of Rayleigh LGS at range of 5 km.

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V. A. Bogachev, A. A. Vereshchagin, M. V. Volkov, S. G. Garanin, M. A. Glukhov, D. E. Guk, M. O. Koltygin, A. V. Kopalkin, R. S. Kuzin, S. M. Kulikov, and F. A. Starikov "Observation of astronomical objects by using an adaptive optical system with Rayleigh laser guide star", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 1191617 (15 December 2021); https://doi.org/10.1117/12.2603308

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