The CHARA array adaptive optics program

Theo A. Ten Brummelaar, Judit Sturmann, Laszlo Sturmann, Matthew D. Anderson, Nils H. Turner, Michael J. Ireland, John D. Monnier, Denis Mourard, Stephen T. Ridgway, Douglas R. Gies, Jean Baptiste Le Bouquin

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

    8 Citations (Scopus)


    The CHARA array is an optical/near infrared interferometer consisting of six 1-meter diameter telescopes, the longest baseline of which is 331 meters. With sub-millisecond angular resolution, the CHARA array is able to spatially resolve nearby stellar systems and reveal their detailed structures. To improve the sensitivity and scientific throughput, the CHARA array was funded by NSF-ATI in 2011 for an upgrade of adaptive optics (AO) systems to all six telescopes. This first grant covered Phase I of the adaptive optics system, which includes an on-telescope Wavefront Sensor (WFS) and non-common-path (NCP) error correction. Phase II of the program was funded by the NSF/MRI in 2016, and includes purchasing and installing the deformable mirrors at each telescope to complete the system. In this paper we will discuss both phases of the program, how the challenge of AO differs for interferometry, and the first results of the full system.

    Original languageEnglish
    Title of host publicationAdaptive Optics Systems VI
    EditorsDirk Schmidt, Laura Schreiber, Laird M. Close
    ISBN (Print)9781510619593
    Publication statusPublished - 2018
    EventAdaptive Optics Systems VI 2018 - Austin, United States
    Duration: 10 Jun 201815 Jun 2018

    Publication series

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


    ConferenceAdaptive Optics Systems VI 2018
    Country/TerritoryUnited States


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