Building a GRAVITY+ adaptive optics test bench

Millour, Florentin; Bério, Philippe; Lagarde, Stéphane; Robbe-Dubois, Sylvie; Gouvret, Carole; Lai, Olivier; Allouche, Fatmé; Bailet, Christophe; Boebion, Olivier; Carbillet, Marcel; Marcotto, Aurélie; Spang, Alain; Girard, Paul; Mauclert, Nicolas; Lebouquin, Jean-Baptiste; Paumard, Thibaut; Soulez, Férréol; Woillez, Julien; More, Nikhil; Eisenhauer, Frank; Straubmeier, Christian; Kreidberg, Laura; Garcia, Paulo; Hoenig, Sebastian

doi:10.1117/12.2627105

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Building a GRAVITY+ adaptive optics test bench

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More, Nikhil
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

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Eisenhauer, Frank
Infrared and Submillimeter Astronomy, MPI for Extraterrestrial Physics, Max Planck Society;

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Citation

Millour, F., Bério, P., Lagarde, S., Robbe-Dubois, S., Gouvret, C., Lai, O., et al. (2022). Building a GRAVITY+ adaptive optics test bench. In Optical and Infrared Interferometry and Imaging VIII. doi:10.1117/12.2627105.

Cite as: https://hdl.handle.net/21.11116/0000-000C-85F3-B

Abstract

We present the testbench aimed at integrating the GRAVITY+ adaptive optics GPAO. It consists of two independent elements, one reproducing the Coudé focus of the telescope, including the telescope deformable mirror mount (with its surface facing down), and one reproducing the Coudé room opto-mechanical environment, including a downwards-propagating beam, and the telescope mechanical interfaces in order to fit in the new GPAO wavefront sensor. We discuss in this paper the design of this bench and the solutions we adopted to keep the cost low, keep the design compact (allowing it to be fully contained in a 20 sqm clean room), and align the bench independently from the adaptive optics. We also discuss the features we have set in this bench.