ASTRA: ASTrometry and phase-Referencing Astronomy on the Keck interferometer

J. Woillez, R. Akeson, M. Colavita, J. Eisner, A. Ghez, J. Graham, L. Hillenbrand, R. Millan-Gabet, J. Monnier, J. U. Pott, S. Ragland, P. Wizinowich, E. Appleby, B. Berkey, A. Cooper, C. Felizardo, J. Herstein, M. Hrynevych, O. Martin, D. MedeirosD. Morrison, T. Panteleeva, B. Smith, K. Summers, K. Tsubota, C. Tyaua, E. Wetherell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Scopus citations


ASTRA (ASTrometric and phase-Referencing Astronomy) is an upgrade to the existing Keck Interferometer which aims at providing new self-phase referencing (high spectral resolution observation of YSOs), dual-field phase referencing (sensitive AGN observations), and astrometric (known exoplanetary systems characterization and galactic center general relativity in strong field regime) capabilities. With the first high spectral resolution mode now offered to the community, this contribution focuses on the progress of the dual field and astrometric modes.

Original languageEnglish (US)
Title of host publicationOptical and Infrared Interferometry II
StatePublished - 2010
EventOptical and Infrared Interferometry II - San Diego, CA, United States
Duration: Jun 27 2010Jul 2 2010

Publication series

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


OtherOptical and Infrared Interferometry II
Country/TerritoryUnited States
CitySan Diego, CA


  • Dual field phase referencing
  • Interferometry
  • Narrow angle astrometry

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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