Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pasp..119..127m&link_type=abstract
The Publications of the Astronomical Society of the Pacific, Volume 119, Issue 851, pp. 127-133.
Astronomy and Astrophysics
Astronomy
28
Instrumentation: Interferometers, Instrumentation: Spectrographs, Site Testing, Stars: Oscillations (Including Pulsations), Techniques: Radial Velocities
Scientific paper
We report the observations of the clear-sky fraction at the Concordia station during winter 2006 and derive from it the duty cycle for the astronomical observations. The duty cycle and observation duration at Dome C allow for efficient asteroseismic observations. This performance is analyzed and compared to network observations. For network observations, simulations were run using the helioseismic Global Oscillation Network Group as a reference. Observations with one site in Antarctica provide performance similar to or better than that with a six-site network, since the duty cycle limited by meteorology is as high as 92%. On bright targets, a 100 day long time series with a duty cycle of about 87% can be observed, which is not possible for a network observation.
Based on observations made by E. Aristidi during the 2006 second overwinter at the French-Italian Concordia Station, Dome C, Antarctica.
Aristidi Eric
Mosser Benoit
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