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Last name: AGABI
First name: A.
Astron. and Astroph., 416, pp. 1193-1200 (2004)
Astron. and Astroph., 422, pp. 1123-1127 (2004)
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We present a reanalysis of several years of DIMM data at the site of Dome C, Antarctica, to provide measurements of the coherence time τ 0. Statistics and seasonal behaviour of τ 0 are given at two heights above the ground, 3m and 8m, for the wavelength λ = 500nm. We found an annual median value of 2.9ms at the height of 8m. A few measurements...
n/a, Società Astronomica Italiana Publication 2, p. 146 (2003)
The first astronomical seeing monitoring has been made with a DIMM instrument at the Antarctic plateau site of Dome C in December, 2002 on the bright star Canopus (alpha Eri) during the daytime. In these far from optimal conditions, a median seeing of 1.2 arcsec as been obtained, with extended periods better than 1 arc-sec and 12 percent of the...
Astron. & Astrophys., 406, pp. L19-L22 (2003)
The HAR observing methods such as Adaptive Optics and Interferometery, require a better understanding of the behavior of the perturbed wavefronts, more exactly a better knowledge of the atmospheric turbulence model in addition to the associate parameters. This is very crucial for modeling the HAR techniques and particularly for the evaluation...
The first astronomical seeing monitoring has been made with a DIMM instrument at the Antarctic plateau site of Dome C in December, 2002 on the bright star Canopus (α Eri) during the daytime. In these far from optimal conditions, a median seeing value of 1.20 arcsec as been obtained, with extended periods better than 1 arcsec and 12 percent of...
The first astronomical seeing monitoring has been made with a DIMM instrument at the Antarctic plateau site of Dome C in December, 2002 on the bright star Canopus (α Eri) during the daytime. In these far from optimal conditions, a median seeing value of 1.20 arcsec as been obtained, with extended periods better than 1 arcsec and 12 percent of...
We have analysed the first interferometric fringes recorded at Dome C, Antarctica. Measurements were done between 31/01 and 02/02/2005 at daytime. Aim of the analysis is to measure temporal fluctuations of the atmospheric piston, which are critical for interferometers and determine their sensitivity. These scales are derived through the motion...
PASP, n/a, p. 840 (2006)
n/a, ed. J. Proceedings, n/a, (2005)
Here we present why we decided to undertake a site characterization at Dome C, Antarctica following a first step made at South Pole. It was clear that poor seeing measured at South Pole was mainly due to ground catabatic wind interacting with strong vertical temperature (refractive index) gradient. Thus, we though to move to Dome C where no...
Here we present why we decided to undertake a site characterization at Dome C, Antarctica following a first step made at South Pole. It was clear that poor seeing measured at South Pole was mainly due to ground catabatic wind interacting with strong vertical temperature (refractive index) gradient. Thus, we though to move to Dome C where no...
SF2A-2005 : Semaine de l'Astrophysique Française, n/a, (2005)
Wide Field Survey Telecopes on Dome C/A, Antarctica, Proceedings of Acta Astronomica Sinica n/a, (2005)
Hereafter we give a brief history of our contribution to astronomical site testing in Antarctica, at least for the high angular resolution in the visible range. The decision to undertake the first site testing at South Pole began one year after a congress organized by French Académie des Sciences, in year 1992. Indeed, in 1993 a meeting took...
n/a, eds. M. Giard, F. Casoli and F. Paletou, EAS Publications Series 14, pp. 13-18 (2005). http://dx.doi.org/10.1051/eas:2005004
n/a, ed. K. A. Van der Hucht, Proc. XXVI th IAU General Assembly XXVIB, (2006)
Dome C Astronomy/Astrophysics meeting, EAS Publications Series 14, p. 13 (2004)
Astron. & Astrophys., 444, pp. 651-659 (2005)
Antarctic Science, 18, pp. 437-444 (2006)
Context. The winter seeing at Concordia is bimodal, i.e. either excellent or quite poor, depending on the altitude above the snow surface. We study the temporal behavior of the good seeing sequences. Efficient exploitation of extremely good seeing conditions with an adaptive optics system requires long integrations.Aims: We examine the temporal...
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