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13 September 2012 The AOLI low-order non-linear curvature wavefront sensor: a method for high sensitivity wavefront reconstruction
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Abstract
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jonathan Crass, Peter Aisher, Bruno Femenia, David L. King, Craig D. Mackay, Rafael Rebolo-López, Lucas Labadie, Antonio Pérez Garrido, Marc Balcells, Anastasio Díaz Sánchez, Jesús Jimenez Fuensalida, Roberto L. Lopez, Alejandro Oscoz, Jorge A. Pérez Prieto, Luis F. Rodríguez-Ramos, and Isidro Villó "The AOLI low-order non-linear curvature wavefront sensor: a method for high sensitivity wavefront reconstruction", Proc. SPIE 8447, Adaptive Optics Systems III, 84470T (13 September 2012); https://doi.org/10.1117/12.925714
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