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 proceeding contribution

13 Citations (Scopus)


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
Title of host publicationAdaptive Optics Systems II
EditorsBrent L. Ellerbroek, Michael Hart, Norbert Hubin, Peter L. Wizinowich
Place of PublicationBellingham, WA
Number of pages12
ISBN (Print)9780819482266
Publication statusPublished - 2010
Externally publishedYes
EventAdaptive Optics Systems II - San Diego, CA, United States
Duration: 27 Jun 20102 Jul 2010

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


OtherAdaptive Optics Systems II
CountryUnited States
CitySan Diego, CA

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  • Cite this

    Christou, J. C., Neichel, B., Rigaut, F., Sheehan, M., McDermid, R. M., Trancho, G., ... Walls, B. (2010). ALTAIR performance and updates at Gemini North. In B. L. Ellerbroek, M. Hart, N. Hubin, & P. L. Wizinowich (Eds.), Adaptive Optics Systems II (pp. 77361R-1-77361R-12). [77361R] (Proceedings of SPIE; Vol. 7736). Bellingham, WA: SPIE.