Measuring Solar Diameter with Baily Beads: From Watts to Kaguya's Lunar Profiles
Costantino Sigismondi
(ICRA, University of Rome "Sapienza", Italy and Nice University, France)
Coauthor(s): M. Soma, D. Herald
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The variations of the solar diameter smaller than 1 part over 10000 are very difficult to be detected unambiguously. One of the most promising methods is the use of Baily's beads during central solar eclipses (total and annular), and it can be applied also to old observations. Recently the lunar profiles computed from the Japanese mission Kaguya become available, and we compare the first results on the computation of solar diameter during the annular eclipse of September 2006 obtained with Watts and Kaguya's data.