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Proceedings Paper

G-SCIDAR measurements on Mt. Graham: recent results
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Paper Abstract

We present recent results of the atmospheric turbulence measured with a Generalized SCIDAR at Mt. Graham, running for 16 nights in 2004 and 2005 at the focus of the VATT Telescope. The principle of the data reduction process is shown, as well as the validation of the obtained results. From the reduced C2N and wind-speed profiles, together with an estimate for the dome-seeing, the astroclimatic parameters such as seeing ε, isoplanatic angle υ0 and wavefront coherence time τ0 are calculated. We obtained median values for ε (0.67"±0.17"), υ0 (2.71"±1.11") and τ0 (3.63msec ± 1.66msec), which indicate that Mt. Graham is as an astronomical site comparable to the best ones in the world. As an application, the calculated C2N profiles were used together with layer-transfer functions for a MCAO system to estimate the optimal conjugated heights of the DMs for the MCAO system of LINC-NIRVANA.

Paper Details

Date Published: 27 June 2006
PDF: 10 pages
Proc. SPIE 6272, Advances in Adaptive Optics II, 627257 (27 June 2006); doi: 10.1117/12.671418
Show Author Affiliations
Sebastian E. Egner, Max-Planck-Institute for Astronomy (Germany)
Elena Masciadri, INAF, Osservatorio Astrofisico di Arcetri (Italy)
Dan McKenna, Steward Observatory (United States)
T. M. Herbst, Max-Planck-Institute for Astronomy (Germany)
W. Gaessler, Max-Planck-Institute for Astronomy (Germany)

Published in SPIE Proceedings Vol. 6272:
Advances in Adaptive Optics II
Brent L. Ellerbroek; Domenico Bonaccini Calia, Editor(s)

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