NAOMI: The adaptive optics system of the Auxiliary Telescopes of the VLTI

Instrumentation: adaptive optics; Instrumentation: interferometers; Adaptive optics systems; Atmospheric seeing; Auxiliary Telescope; Fringe tracking; Interferometric instruments; Tip tilt; Very large telescope interferometer; Wavefront correction; Astronomy and Astrophysics; Space and Planetary Science

Abstract :

[en] Context. The tip-tilt stabilisation system of the 1.8 m Auxiliary Telescopes of the Very Large Telescope Interferometer was never dimensioned for robust fringe tracking, except when atmospheric seeing conditions are excellent. Aims. Increasing the level of wavefront correction at the telescopes is expected to improve the coupling into the single-mode fibres of the instruments, and enable robust fringe tracking even in degraded conditions. Methods. We deployed a new adaptive optics module for interferometry (NAOMI) on the Auxiliary Telescopes. Results. We present its design, performance, and effect on the observations that are carried out with the interferometric instruments.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Woillez, J.; European Southern Observatory Headquarters, Garching bei München, Germany

Abad, J.A.; European Southern Observatory Headquarters, Garching bei München, Germany

Abuter, R.; European Southern Observatory Headquarters, Garching bei München, Germany

Aller Carpentier, E.; European Southern Observatory Headquarters, Garching bei München, Germany

Alonso, J.; European Southern Observatory Vitacura, Vitacura, Casilla, Santiago, Chile

Andolfato, L.; European Southern Observatory Headquarters, Garching bei München, Germany

Barriga, P.; European Southern Observatory Headquarters, Garching bei München, Germany

Berger, J.-P.; Université Grenoble Alpes, CNRS, IPAG, Grenoble, France

Beuzit, J.-L.; Université Grenoble Alpes, CNRS, IPAG, Grenoble, France

Bonnet, H.; European Southern Observatory Headquarters, Garching bei München, Germany

More authors (73 more)

Language :

English

Title :

NAOMI: The adaptive optics system of the Auxiliary Telescopes of the VLTI

Publication date :

September 2019

Journal title :

Astronomy and Astrophysics

ISSN :

0004-6361

eISSN :

1432-0746

Publisher :

EDP Sciences

Volume :

629

Pages :

A41

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

https://www.aanda.org/10.1051/0004-6361/201935890/pdf

Funding text :

Acknowledgements. This research made use of Astropy (http://www. astropy.org), a community-developed core Python package for Astronomy (Astropy Collaboration 2013, 2018). S.Z.-F. acknowledges support from Ini-ciativa Científica Milenio via Núcleo Milenio de Formación Planetaria. S.Z.-F. acknowledges financial support from CONICYT via PFCHA/Doctorado Nacional/2018-21181044 and the European Southern Observatory via its studentship program.

Available on ORBi :

since 25 December 2023

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