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

• Published in: EAS Publications Series
• Main Authors: Carbillet, M., Maire, Anne-Lise, Le Roux, B., Aristidi, E., Giordano, C., Pasqueron de Fommervault, O., Gautier, J., Trinquet, H.
• Format: Conference Object
• Language: English
• Published: EDP Sciences 2010
• Subjects: Physical; chemical; mathematical & earth Sciences; Space science; astronomy & astrophysics; Physique; chimie; mathématiques & sciences de la terre; Aérospatiale; astronomie & astrophysique; Antarc*; Antarctica
• Online Access: https://orbi.uliege.be/handle/2268/243878; https://doi.org/10.1051/eas/1040021

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.