Physics – Optics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490..818m&link_type=abstract
Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI
Physics
Optics
3
Scientific paper
The first complete seasonal variation study extended over 1 year (~80 nights uniformly distributed along twelve months) of all the principal astroclimatic parameters (CN2, seeing ɛ, wavefront coherence time τO, isoplanatic angle θ0, scintillation rate σI2, isoplanatic angle for the MCAO θM - where M is the number of the deformable mirrors DMs - M=1,2,3,...) simulated with an atmospherical model (Meso-Nh) above the San Pedro Martir Observatory is presented. The atmospherical model run in an autonomous way to simulate CN2 and wind speed vertical profiles (over ~20 km) related to the 80 nights after it has been calibrated with the support of a few CN2 measurements. All the integrated parameters are calculated using these two basic elements and general seasonal trends are put in evidence. The impact of our results on the adaptive optics techniques (AO) is discussed as well as the potentialities of the numerical simulations as a new tool for the climatologic analysis of the optical turbulence above astronomical sites.
Egner Sebastian E.
Masciadri Elena
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