Single Star Scidar first light from Dôme C

• Published in: Proceedings of the International Astronomical Union
• Main Authors: Vernin, Jean, Chadid, Merieme, Aristidi, Eric, Azouit, Max, Sadibekova, Tatiana, Trinquet, Hervé
• Format: Article in Journal/Newspaper
• Language: English
• Published: Cambridge University Press (CUP) 2006
• Subjects: Astronomy and Astrophysics; Space and Planetary Science; polar night
• Online Access: http://dx.doi.org/10.1017/s174392130701229x; https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S174392130701229X

In the recent years, a lot of instruments have been put into operation during the polar summer at DômeC., Then, during the first polar night when the Astro-Concordia sation was open for the first time during winter, about 40 balloons (Azouit & Vernin) instrumented to measure optical turbulence profiles and 2 Differencial Image Motion Monitors (DIMM) were setup. The main results from this first important campaign are found in Agabi et al . (2006). It appears from this first night time observations that almost all the optical turbulence was concentrated in the first 30 m above the ice. At an elevation of 8.5 m above the ice the seeing is about 1″.4, while above an elevation of 30 m the seeing drops down to 0″.36. This last figure is coherent with the estimation from Lawrence et al . (2004) if one takes into account that they were not sensitive to the first 30 m., which corresponds to the turbulent surface layer.