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Reducing the field of view in correlating wavefront sensors for solar adaptive optics.

Townson, Matthew J. and Saunter, Christopher D. (2017) 'Reducing the field of view in correlating wavefront sensors for solar adaptive optics.', in Proceedings of the Adaptive Optics for Extremely Large Telescopes 5 (AO4ELT5) : Tenerife, Canary Islands, Spain, June 25-30, 2017. Tenerife: Instituto de Astrofísica de Canarias.

Abstract

Wavefront sensing for solar adaptive optics currently requires the use of extended-field Shack-Hartmann wavefront sensors. Such wavefront sensors suffer from a reduced sensitivity to high altitude turbulence due effects of measuring wavefront gradients using the relative motion within the extended-field. We discuss the performance of centroiding techniques in a correlation Shack-Hartmann wavefront sensor and the insensitivity to high altitude turbulence and propose a method for reducing the field of view required to effectively measure the wavefront gradient in order to increase the sensors sensitivity to high altitude turbulence.

Item Type:Book chapter
Full text:Publisher-imposed embargo
(AM) Accepted Manuscript
File format - PDF
(1069Kb)
Status:Not peer-reviewed
Publisher Web site:https://doi.org/10.26698/AO4ELT5.0156
Date accepted:No date available
Date deposited:02 May 2018
Date of first online publication:2017
Date first made open access:No date available

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