Guidelines for measuring solar radius with Baily beads analysis  

作　　者：SIGISMONDI Costantino 

机构地区：[1]Sapienza University of Rome and ICRA, International Center for Relativistic Astrophysics, P.le Aldo Moro 5, 00185 Roma, Italy [2]Universit de Nice-Sophia Antipolis, Laboratoire H. Fizeau UMR 6525, Parc Valrose, 06108 Nice, France [3]IRSOL, Istituto Ricerche Solari Locarno, Via Patocchi - Prato Pernice CH - 6605 Locarno Monti, Switzerland

出　　处：《Science China(Physics,Mechanics & Astronomy)》2009年第11期1773-1777,共5页中国科学：物理学、力学、天文学（英文版）

摘　　要：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 ΔR= - 0.41"± 0.04", is presented.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 ΔR= ? 0.41“± 0.04”, is presented.

关 键 词：SOLAR ECLIPSES observations EPHEMERIDES SOLAR RADIUS VARIATIONS 

分 类 号：P182.27[天文地球—天文学]