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The ground layer turbulence at Dome C is the cause for more than 90% of the total turbulence column. While the height … of this layer has been currently measured to be approximately 30m, no long term statistics is available from this part of … the atmosphere.
We present the Gattini project: a multisite campaign to measure the optical sky properties above the two high altitude … Antarctic astronomical sites of Dome C and Dome A. The Gattini-DomeC project, part of the IRAIT site testing … campaign and ongoing since January 2006…
Profiling the ground layer turbulence for daytime seeing applications using an array of photodiodes has been documented … in literature, in particular by Beckers who coined the term “SHABAR” for the instrument, short for Shadow Band … Ranger.
The Gattini cameras are two site testing instruments for the measurement of optical sky brightness, large area cloud … cover and auroral detection of the night sky above the high altitude Dome C site in Antarctica. The cameras have been in … operation since January 2006.
We present results of daytime site testing at Dome C in summer … 2003-2004. Daytime seeing has been monitored during 2 1 … 2 months … a DIMM on the bright star Canopus, giving median value of 0.54 arcsec. An every-day best seeing period has been observed around 5pm … with seeing around 0.3 arcsec.
We present wind and temperature profiles at Dome C measured … by balloon born sonds during the polar summer. Data from 197 … flights have been processed for 4 campaigns between 2000 and 2004. We show the exceptionnal wind conditions at Dome C, Average ground … wind speed is 3.6 m/s.
Abstract. A good astronomical site must fulfill several criteria including low atmospheric turbulence and low wind speeds. is therefore important to have a detailed knowledge of the temperature and wind conditions of a location considered for future … astronomical research.