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12 July 2010 ALTAIR performance and updates at Gemini North
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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".
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);

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