Segment phasing for giant telescopes using Moving Horizon Estimation

Jesse Cranney*, François Rigaut, Robert Sharp, Marcos A. van Dam, Ryan McCloy, José De Doná

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Real-time segment phasing is non-trivial in giant segmented mirror telescopes, as slope-based wavefront sensing methods are blind to segment piston if the gaps between segments are sufficiently large. In the GMT, this is certainly the case, and many solutions have been proposed which require additional wavefront sensing hardware and added optomechanical complexity. We propose a novel sequential phase-diversity method which requires only a time-sequence of closed-loop tip-tilt wavefront sensor images.

Original languageEnglish
Title of host publicationAdaptive Optics Systems VIII
EditorsLaura Schreiber, Dirk Schmidt, Elise Vernet
PublisherSPIE
Volume12185
ISBN (Electronic)9781510653511
DOIs
Publication statusPublished - 2022
EventAdaptive Optics Systems VIII 2022 - Montreal, Canada
Duration: 17 Jul 202222 Jul 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12185
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdaptive Optics Systems VIII 2022
Country/TerritoryCanada
CityMontreal
Period17/07/2222/07/22

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