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Proceedings Paper

The AO in AOF
Author(s): Sylvain Oberti; Johann Kolb; Pierre-Yves Madec; Pierre Haguenauer; Miska Le Louarn; Lorenzo Pettazzi; Andres Guesalaga; Robert Donaldson; Christian Soenke; Bogdan Jeram; Marcos Suárez Valles; Mario Kiekebusch; Javier Argomedo; Paolo La Penna; Jerome Paufique; Robin Arsenault; Norbert Hubin; Joel Vernet
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Paper Abstract

The long commissioning of the Adaptive Optics Facility (AOF) project has been completed shortly after this conference, providing AO correction to two Very Large Telescope (VLT) foci supported by an adaptive secondary mirror and four laser guide stars. Four AO modes are delivered: a Single Conjugate AO (SCAO) system for commissioning purpose, wide field and medium field Ground Layer AO (GLAO) for seeing improvement and narrow field Laser Tomography AO (LTAO) for ultimate performance. This paper intends to describe the implemented AO baseline and to highlight the most relevant results and lessons learned. In particular, it will address the control and reconstruction strategy, the wavefront sensing baseline and the online telemetry used to optimize the system online, estimate the turbulence profile and calibrate the misregistrations. Focusing on the LTAO mode, we will describe the tomography optimization, by exploring the reconstruction parameter space. Finally, on sky performance results will be presented both in terms of strehl ratio and limiting magnitude.

Paper Details

Date Published: 10 July 2018
PDF: 20 pages
Proc. SPIE 10703, Adaptive Optics Systems VI, 107031G (10 July 2018); doi: 10.1117/12.2314055
Show Author Affiliations
Sylvain Oberti, European Southern Observatory (Germany)
Johann Kolb, European Southern Observatory (Germany)
Pierre-Yves Madec, European Southern Observatory (Germany)
Pierre Haguenauer, European Southern Observatory (Germany)
Miska Le Louarn, European Southern Observatory (Germany)
Lorenzo Pettazzi, European Southern Observatory (Germany)
Andres Guesalaga, Pontificia Univ. Católica de Chile (Chile)
Robert Donaldson, European Southern Observatory (Germany)
Christian Soenke, European Southern Observatory (Germany)
Bogdan Jeram, European Southern Observatory (Germany)
Marcos Suárez Valles, European Southern Observatory (Germany)
Mario Kiekebusch, European Southern Observatory (Germany)
Javier Argomedo, European Southern Observatory (Germany)
Paolo La Penna, European Southern Observatory (Germany)
Jerome Paufique, European Southern Observatory (Germany)
Robin Arsenault, European Southern Observatory (Germany)
Norbert Hubin, European Southern Observatory (Germany)
Joel Vernet, European Southern Observatory (Germany)


Published in SPIE Proceedings Vol. 10703:
Adaptive Optics Systems VI
Laird M. Close; Laura Schreiber; Dirk Schmidt, Editor(s)

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