Contribution of the surface layer turbulence at Maidanak observatory

Details Contribution of the surface layer turbulence at Maidanak observatory Contribution of the surface layer turbulence at Maidanak observatory

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iauss...1e..11i&link_type=abstract

Astronomical Facilities of the Next Decade, 26th meeting of the IAU, Special Session 1, 16-17 August, 2006 in Prague, Czech Repu

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The results of night-time microthermal measurements of surface layer optical turbulence at Maidanak observatory in Uzbekistan are presented. The measurements were carried out in July-August 2002 using the micro temperature sensors developed at the University of Nice. Temperature sensors were installed on 8 levels between 3.0 and 25.5m on the preinstalled meteorological mast. Simultaneous measurements of total seeing by Differential Image Motion Monitor (DIMM) allow us estimate the surface layer contribution to the total seeing - was found to be about 8%. The meteorological data, obtained at the same height as DIMM were used to estimate the relation of surface layer turbulence optical intensity to wind speed. It was found that during low wind speed (<0.5 m/s) or calm (windless) weather conditions surface layer turbulence increased which causes the deterioration of the total seeing.

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