ALTAIR performance and updates at Gemini North

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

doi:10.1117/12.856776

12 July 2010 ALTAIR performance and updates at Gemini North

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

Author Affiliations +

Proceedings Volume 7736, Adaptive Optics Systems II; 77361R (2010) https://doi.org/10.1117/12.856776
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

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".

Citation Download Citation

Julian C. Christou, Benoit Neichel, Francois Rigaut, Michael Sheehan, Richard M. McDermid, Gelys Trancho, Chadwick Trujillo, and Brian Walls "ALTAIR performance and updates at Gemini North", Proc. SPIE 7736, Adaptive Optics Systems II, 77361R (12 July 2010); https://doi.org/10.1117/12.856776

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