Turbulence and Seeing measurements at Dome C A collaboration UNSW, CTIO and the University of Nice.

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Presentation transcript:

Turbulence and Seeing measurements at Dome C A collaboration UNSW, CTIO and the University of Nice

What did we learn at the South Pole?

South Pole 2001……and Dome C 2003

The boundary layer cycle

The cycle in the Dome C Summer 00:0006:0012:0000:0018:0006:0012:0000:0018: Best seeing when: 1) Minimum radiation from the Sun 2) Minimum Thermal gradient

The cycle in the Dome C Summer

Free atmosphere turbulence

Effect of the high altitude wind: Paranal

MASS first data 24/03

Seeing Mauna Kea Paranal

Isoplanatic Angle Paranal

Coherence Time

Conclusion Already spectacular Seeing values, expected to improve in winter Very advantageous ground level turbulence profile Need more data to conclude on the isoplanatic angle and coherence time

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