The Adaptive Optics Lucky Imager (AOLI) is a new instrument under development to demonstrate near diffraction limited imaging in the visible on large ground-based telescopes. We present the adaptive optics system being designed for the instrument comprising a large stroke deformable mirror, fixed component non-linear curvature wavefront sensor and photon-counting EMCCD detectors. We describe the optical design of the wavefront sensor where two photoncounting CCDs provide a total of four reference images. Simulations of the optical characteristics of the system are discussed, with their relevance to low and high order AO systems. The development and optimisation of high-speed wavefront reconstruction algorithms are presented. Finally we discuss the results of simulations to demonstrate the sensitivity of the system.
@article{arxiv.1207.0991,
title = {The AOLI low-order non-linear curvature wavefront sensor: a method for high sensitivity wavefront reconstruction},
author = {Jonathan Crass and Peter Aisher and Bruno Femenia and David L. King and Craig D. Mackay and Rafael Rebolo-López and Lucas Labadie and Antonio Pérez Garrido and Marc Balcells and Anastasio Díaz Sánchez and Jesús Jimenez Fuensalida and Roberto L. Lopez and Alejandro Oscoz and Jorge A. Pérez Prieto and Luis F. Rodríguez-Ramos and Isidro Villó},
journal= {arXiv preprint arXiv:1207.0991},
year = {2012}
}
Comments
10 pages. To be published in Proc SPIE 8447: Adaptive Optics Systems III