Ground Layer Adaptive Optics: PSF effects on ELT scales

Details Ground Layer Adaptive Optics: PSF effects on ELT scales Ground Layer Adaptive Optics: PSF effects on ELT scales

2009-11-18

arxiv.org/abs/0911.3576v1

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

5 pages, 5 figures, proceeding of "Instrumentation for Extremely Large Telescopes", a Workshop held at Ringberg Castle, Bavari

Scientific paper

On certain extent the behavior of the Adaptive Optics correction for Extremely Large Telescope scales with diameter size. But in Ground Layer Adaptive Optics the combined effect of a Large Field of View and the large overlap of Guide Stars pupil footprints at high atmospheric altitude introduces severe changes in the behavior of the correction returning a very different distribution of the energy going from known 8-10meter to 100m diameters. In this paper we identify the reasons and the ways of these different behaviors.

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