ALTAIR performance and updates at Gemini North

Julian C. Christou, Benoit Neichel, François Rigaut, Michael Sheehan, Richard M. McDermid, Gelys Trancho, Chadwick Trujillo, Brian Walls

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

17 Scopus citations


We present up-to-date performance characteristics for natural guide star (NGS) operation of the ALTAIR adaptive optics system at the Gemini N. 8m telescope. These results are obtained from a nightly performance monitoring campaign where we obtain a consistent set of point spread functions (PSFs) over a broad range of observing conditions. These results are compared with system modelling and circular buffer information from the Altair adaptive optics (AO) system. The latter show residual tip-tilt errors with a median rms ∼ 18.5 mas. We also present preliminary results from a new operational mode of the laser guide star (LGS) AO which will eventually yield all-sky access with image FWHM ∼ 0.1" -0.2".

Original languageEnglish (US)
Title of host publicationAdaptive Optics Systems II
EditionPART 1
StatePublished - 2010
Externally publishedYes
EventAdaptive Optics Systems II - San Diego, CA, United States
Duration: Jun 27 2010Jul 2 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
NumberPART 1
ISSN (Print)0277-786X


ConferenceAdaptive Optics Systems II
Country/TerritoryUnited States
CitySan Diego, CA


  • Adaptive optics
  • Laser guide star
  • Natural guide star
  • Performance
  • Strehl ratio

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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