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GPS chronodatation of large format, high frequency images for observing solar and planetary occultation phenomena

Matteo Schiavan University of Padova, Italy

Monday, November 11, 2013, 11:30

Lecture room 435, Günther-Scharowskystr. 1

Despite the many collected data, the real value of the solar diameter is still unknown, as well as its variations within a solar cycle. The phenomenon of Baily's beads, during solar eclipses, allows a very accurate ground estimation of the solar diameter. Their observation requires to take images at high frame rate, dated at high accuracy. The recent appearence of sensors combining both large size and high frame rate, together with the high accuracy reached by GPS, can lead to the development of new instruments, for improving such measurement. This thesis describes the development and characterization of one such instruments, at the Laboratoire d'Astrophysique de Marseille.