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Proceedings Paper

The AOLI low-order non-linear curvature wavefront sensor: a method for high sensitivity wavefront reconstruction
Author(s): 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; Isidro Villó
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Paper 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.

Paper Details

Date Published: 13 September 2012
PDF: 10 pages
Proc. SPIE 8447, Adaptive Optics Systems III, 84470T (13 September 2012); doi: 10.1117/12.925714
Show Author Affiliations
Jonathan Crass, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Peter Aisher, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Bruno Femenia, Instituto de Astrofísica de Canarias (Spain)
Univ. Politécnica de Cartagena (Spain)
David L. King, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Craig D. Mackay, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Rafael Rebolo-López, Instituto de Astrofísica de Canarias (Spain)
Consejo Superior de Investigaciones Científicas (Spain)
Lucas Labadie, I. Physikalsiches Institut, Univ. zu Köln (Germany)
Antonio Pérez Garrido, Univ. Politécnica de Cartagena (Spain)
Marc Balcells, Isaac Newton Group of Telescopes (Spain)
Instituto de Astrofísica de Canarias (Spain)
Univ. de La Laguna (Spain)
Anastasio Díaz Sánchez, Univ. Politécnica de Cartagena (Spain)
Jesús Jimenez Fuensalida, Instituto de Astrofísica de Canarias (Spain)
Univ. de La Laguna (Spain)
Roberto L. Lopez, Instituto de Astrofísica de Canarias (Spain)
Alejandro Oscoz, Instituto de Astrofísica de Canarias (Spain)
Univ. de La Laguna (Spain)
Jorge A. Pérez Prieto, Instituto de Astrofísica de Canarias (Spain)
Univ. de La Laguna (Spain)
Luis F. Rodríguez-Ramos, Instituto de Astrofísica de Canarias (Spain)
Isidro Villó, Univ. Politécnica de Cartagena (Spain)


Published in SPIE Proceedings Vol. 8447:
Adaptive Optics Systems III
Brent L. Ellerbroek; Enrico Marchetti; Jean-Pierre Véran, Editor(s)

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