CHARA array adaptive optics II: Non-common-path correction and downstream optics

Theo ten Brummelaar, Xiao Che, Harold McAlister, Michael Ireland, John Monnier, Denis Mourard, Stephen Ridgway, Judit Sturmann, Laszlo Sturmann, Nils Turner, Peter Tuthill

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

8 Citations (Scopus)


We describe a back-end Adaptive Optics system for the CHARA Array called Lab-AO intended to compensate for non-common path errors between the AO system at the telescopes and the final beam combining area some hundreds of meters away. The system is an on-axis, very small field of view, low order system that will work on star light if enough is present, or will make use of a blue light beacon sent from the telescope towards the laboratory if not enough star light is available. The first of six of these system has been installed and has recently been tested on the sky. Another five will be built for the remaining telescopes later this year.

Original languageEnglish
Title of host publicationAdaptive Optics Systems IV
EditorsEnrico Marchetti, Laird M. Close, Jean-Pierre Véran
Place of PublicationBellingham, Washington
Number of pages5
ISBN (Electronic)9780819496164
Publication statusPublished - 2014
Externally publishedYes
EventAdaptive Optics Systems IV - Montreal, Canada
Duration: 22 Jun 201427 Jun 2014

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


OtherAdaptive Optics Systems IV


  • Adaptive Optics
  • Data Reduction
  • Deformable Mirror
  • Non Common path
  • Wavefront Sensor


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