Astronomy and Astrophysics – Astrophysics
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sf2a.conf...59i&link_type=abstract
Abstracts from SF2A-2001: Semaine de l'Astrophysique Francaise, meeting held in Lyon, France, May 28-June 1st, 2001, Eds.: F. Co
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
The statistical analysis of angle-of-arrival fluctuations appears to be well adapted to monitor the optical effects induced by the atmospheric turbulence on the images observed using ground-based telescopes. In daytime, these fluctuations may be easily observed on solar limb images. In the context of the comparison planned between solar diameter measurements performed from ground (Solar astrolabe and DORaySol experiments) and space (PICARD experiment), a Generalized Solar Seeing Monitor (M. I. Sol. F. A) is proposed. It is based on simultaneous observations in the image and the pupil planes of the fluctuations leading, in the framework of the Von Karman model, to the estimation of the coherence parameters characterizing the wave-fronts. The optical turbulence profiles Cn2(h)are also deduced. Preliminary results obtained from the data recorded using the solar experiments based at Calern Observatory are given.
Assus Pierre
Berdja Amokrane
Borgnino Julien
Chibani M.
Irbah Abdenour
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