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Proceedings Paper

AOLI: Adaptive Optics Lucky Imager: diffraction limited imaging in the visible on large ground-based telescopes
Author(s): Craig Mackay; Rafael Rebolo-López; Bruno Femenia Castellá; Jonathan Crass; David L. King; Lucas Labadie; Peter Aisher; 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 highest resolution images ever taken in the visible were obtained by combining Lucky Imaging and low order adaptive optics. This paper describes a new instrument to be deployed on the WHT 4.2m and GTC 10.4 m telescopes on La Palma, with particular emphasis on the optical design and the expected system performance. A new design of low order wavefront sensor using photon counting CCD detectors and multi-plane curvature wavefront sensor will allow dramatically fainter reference stars to be used, allowing virtually full sky coverage with a natural guide star. This paper also describes a significant improvements in the efficiency of Lucky Imaging, important advances in wavefront reconstruction with curvature sensors and the results of simulations and sensitivity limits. With a 2 x 2 array of 1024 x 1024 photon counting EMCCDs, AOLI is likely to be the first of the new class of high sensitivity, near diffraction limited imaging systems giving higher resolution in the visible from the ground than hitherto been possible from space.

Paper Details

Date Published: 24 September 2012
PDF: 10 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 844621 (24 September 2012); doi: 10.1117/12.925618
Show Author Affiliations
Craig Mackay, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Rafael Rebolo-López, Instituto de Astrofísica de Canarias (Spain)
Consejo Superior de Investigaciones Científicas (Spain)
Bruno Femenia Castellá, Univ. Politécnica de Cartagena (Spain)
Jonathan Crass, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
David L. King, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Lucas Labadie, Univ. zu Köln (Germany)
Peter Aisher, Institute of Astronomy, Univ. of Cambridge (United Kingdom)
Antonio Pérez Garrido, Univ. Politécnica de Cartagena (Spain)
Marc Balcells, Isaac Newton Group of Telescopes (Spain)
Anastasio Díaz-Sánchez, Univ. Politécnica de Cartagena (Spain)
Jesús Jimenez Fuensalida, Instituto de Astrofísica de Canarias (Spain)
Roberto L. Lopez, Instituto de Astrofísica de Canarias (Spain)
Alejandro Oscoz, Instituto de Astrofísica de Canarias (Spain)
Jorge A. Pérez Prieto, Instituto de Astrofísica de Canarias (Spain)
Luis F. Rodríguez-Ramos, Instituto de Astrofísica de Canarias (Spain)
Isidro Villó, Univ. Politécnica de Cartagena (Spain)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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