Adaptive optics (AO) and ground-layer AO for Dome C: numerical simulation results

M. Carbillet (1) , A.-L. Maire (2) , B. Le Roux (3) , E. Aristidi (4) , C. Giordano , O. Pasqueron de Fommervault , J. Gautier (5) , H. Trinquet (6)

1 LAGRANGE - Joseph Louis LAGRANGE
2 MPIA - Max-Planck-Institut für Astronomie
3 LAM - Laboratoire d'Astrophysique de Marseille
4 LUAN - Laboratoire Universitaire d'Astrophysique de Nice
5 UNS UFR Sciences - Université Nice Sophia Antipolis - Faculté des Sciences
6 FIZEAU - Laboratoire Hippolyte Fizeau

We present the latest results of our on-going closed-loop “end-to-end” numerical adaptive optics (AO) simulations concerning both a standard-AO and a three-star ground-layer AO system for a near-infrared 2-m class telescope at Dome C, Antarctica. We demonstrate that Dome C is an ideal site for wide-field AO-aided astronomy, define in details the AO system(s) optimized for the median turbulence profile considered, and finally show that a 0.3 Strehl ratio and 200-mas-wide stable point-spread function is reached in band J on at least a 15^prime-diameter field.

Domaines: Astrophysique [astro-ph]

M. Carbillet, A.-L. Maire, B. Le Roux, E. Aristidi, C. Giordano, et al.. Adaptive optics (AO) and ground-layer AO for Dome C: numerical simulation results. 3rd ARENA Conference: An Astronomical Observatory at CONCORDIA (Dome C, Antarctica), 2009, Frascati, Italy. pp.157-164, ⟨10.1051/eas/1040021⟩. ⟨hal-02481894⟩