G-SCIDAR measurements on Mt. Graham: recent results

Details G-SCIDAR measurements on Mt. Graham: recent results G-SCIDAR measurements on Mt. Graham: recent results

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6272e.165e&link_type=abstract

Advances in Adaptive Optics II. Edited by Ellerbroek, Brent L.; Bonaccini Calia, Domenico. Proceedings of the SPIE, Volume 6272

Physics

Optics

1

Scientific paper

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 ɛ, isoplanatic angle υ0 and wavefront coherence time τ0 are calculated. We obtained median values for ɛ (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.

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