The AO in AOF

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

doi:10.1117/12.2314055

10 July 2018 The AO in AOF

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

Author Affiliations +

Proceedings Volume 10703, Adaptive Optics Systems VI; 107031G (2018) https://doi.org/10.1117/12.2314055
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

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.

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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, and Joel Vernet "The AO in AOF", Proc. SPIE 10703, Adaptive Optics Systems VI, 107031G (10 July 2018); https://doi.org/10.1117/12.2314055

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