Optomechanical design of the Laser Launch Telescope for the GTC adaptive optics system

Javier Moreno Raso; Eloi Vázquez; Diego Saez; José Domingo Meléndez; José Manuel Sánchez Cercós; Lucas Salvador; Jesús Aivar Mateo

doi:10.1117/12.2600461

12 September 2021 Optomechanical design of the Laser Launch Telescope for the GTC adaptive optics system

Javier Moreno Raso, Eloi Vázquez, Diego Saez, José Domingo Meléndez, José Manuel Sánchez Cercós, Lucas Salvador, Jesús Aivar Mateo

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Proceedings Volume 11871, Optical Design and Engineering VIII; 1187109 (2021) https://doi.org/10.1117/12.2600461
Event: SPIE Optical Systems Design, 2021, Online Only

Abstract

LIDAX is developing the Laser Launch Telescope for the Gran Telescopio de Canarias (GTC) located at the Roque de los Muchachos Observatory on the island of La Palma, Canary Islands, Spain. This unique beam expander will be part of the GTC Adaptive Optics System (GTCAO) facility, managed by the IAC (Instituto de Astrofísica de Canarias), and will allow the creation of laser guide stars to feed the Adaptive Optics System of the GTC, removing the atmospheric turbulence to obtain high quality images of the stellar objects observed. This paper describes the opto-mechanical design and shows how the design- analysis process is performed to meet the performance requirements, explaining the STOP analysis carried out together with INTA-LINES. Such a process includes the initial mechanical design, the elaboration of both thermal and FEM models to analyze the behavior in terms of temperatures distribution, stiffness, and thermo-elastic effects, and of course the of lenses’ displacements and deformations under the different load cases and boundary conditions, which are transformed into Zernike Polynomials to evaluate the WFE of the Telescope, which allows to obtain, closing the loop, the best optical performance.

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Citation Download Citation

Javier Moreno Raso, Eloi Vázquez, Diego Saez, José Domingo Meléndez, José Manuel Sánchez Cercós, Lucas Salvador, and Jesús Aivar Mateo "Optomechanical design of the Laser Launch Telescope for the GTC adaptive optics system", Proc. SPIE 11871, Optical Design and Engineering VIII, 1187109 (12 September 2021); https://doi.org/10.1117/12.2600461

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