Impact of telescope seeing on laser adaptive optics

Details Impact of telescope seeing on laser adaptive optics Impact of telescope seeing on laser adaptive optics

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006optl...31.2127h&link_type=abstract

Optics Letters, vol. 31, Issue 14, pp.2127-2129

Physics

Optics

1

Atmospheric Turbulence, Telescopes, Astronomical Optics

Scientific paper

Atmospheric turbulence in the internal light path of a telescope produces noncommon path phase differences that degrade the image quality of adaptive-optics systems employing laser guide stars. The spatial covariance and rms wavefront errors produced by this effect are derived. It is found that the tilt-removed wavefront error ranges from about 12nm for a representative 30m telescope to 59nm for a 100m telescope of similar optical design. For adaptive-optics systems that aim to derive tip-tilt information from the laser guide stars the error is considerably larger, ranging from 22nm for the 30m telescope to 256nm for the 100m telescope. This effect can be a significant impediment to the performance of such systems.

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