LESIA - Observatoire de Paris

AO calibration strategy for the ELT : toward a Pseudo-Synthetic Interaction Matrix ?

mardi 20 février 2018, par Cedric Taïssir Heritier (LAM/ONERA/Obs. Arcetri/ESO)

Lundi 5 mars 2018 à 14h00 , Lieu : Salle de réunion du bâtiment 12

To benefit from the full scientific potential of the future Extremely Large Telescope, its instruments will rely on Adaptive Optics (AO) systems. However, the design of the ELT will provide a challenging environment for the AO calibration, as there will be moving elements in the system and no calibration source. To overcome these constraints, a complete rethinking of the AO calibration procedures becomes necessary.

Some strategies have already been identified and tested on 8-meters facilities such as the VLT-AOF or the LBT-FLAO and the first results seem to lead to a Pseudo-Synthetic approach, merging on-sky measurement and synthetic models. After introducing the context, I will present the current developments of a synthetic model to reproduce the LBT-FLAO Pyramid WFS behavior in the AO simulator OOMAO.

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