Guidelines for measuring solar radius with Baily beads analysis

Details Guidelines for measuring solar radius with Baily beads analysis Guidelines for measuring solar radius with Baily beads analysis

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009scchg..52.1773s&link_type=abstract

Science in China Series G: Physics, Mechanics and Astronomy, Volume 52, Issue 11, pp.1773-1777

Astronomy and Astrophysics

Astronomy

3

Solar Eclipses, Observations, Ephemerides, Solar Radius Variations

Scientific paper

By inspection of central eclipses videorecords, data of Baily beads timings are retrievable. Knowing the lunar limb profile at the moment of the eclipse we evaluate the excess or defect of solar limb when the Sun is assumed at its standard radius. Two procedures of data analysis are here presented: one based on limb heights and the other on times. While these methods are based upon Occult 4 software, they can be used with other ephemerides and new lunar profiles. The example of 2006 total eclipse data, with its remarkably negative value of Δ R= - 0.41“± 0.04”, is presented.

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