Improving the seeing with wide-field adaptive optics in the near-infrared

Details Improving the seeing with wide-field adaptive optics in the near-infrared Improving the seeing with wide-field adaptive optics in the near-infrared

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006mnras.365.1324l&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 365, Issue 4, pp. 1324-1332.

Physics

Optics

6

Instrumentation: Adaptive Optics, Instrumentation: High Angular Resolution

Scientific paper

In this paper, we present simulation results of a ground-layer correction adaptive optics system (GLAO), based on four laser guide stars and a single deformable mirror. The goal is to achieve a seeing improvement over an 8-arcmin field of view, in the near-infrared (from 1.06 to 2.2μm). We show results on the scaling of this system (number of subapertures, frame rates), and the required number of tip-tilt stars. We investigate the use for GLAO of both sodium and Rayleigh guide stars. We also show that if the lasers can be repositioned, the performance of the adaptive optics can be tailored to the astronomical observations.

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