11 December 2020 Cophasing multiple aperture telescopes with linearized analytic phase diversity
Sébastien Vievard, Aurélie M. Bonnefois, Frédéric Cassaing, Joseph Montri, Laurent M. Mugnier
Author Affiliations +
Abstract

Focal plane wavefront sensing is an appealing technique to cophase multiple aperture telescopes. Phase diversity (PD), operable with any aperture configuration or source extension, generally suffers from high computing load. We introduce, characterize, and experimentally validate the linearized analytical phase diversity (LAPD) algorithm, based on a fast linearized PD algorithm with a capture range comparable to classic PD. We demonstrate that a typical performance of λ  /  75  RMS wavefront error can be reached.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 2329-4124/2020/$28.00 © 2020 SPIE
Sébastien Vievard, Aurélie M. Bonnefois, Frédéric Cassaing, Joseph Montri, and Laurent M. Mugnier "Cophasing multiple aperture telescopes with linearized analytic phase diversity," Journal of Astronomical Telescopes, Instruments, and Systems 6(4), 040501 (11 December 2020). https://doi.org/10.1117/1.JATIS.6.4.040501
Received: 5 September 2020; Accepted: 19 November 2020; Published: 11 December 2020
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Cited by 5 scholarly publications.
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KEYWORDS
Telescopes

Error analysis

James Webb Space Telescope

Point spread functions

Sensors

Algorithm development

Mirrors

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