Towards a unified definition of solar limb during central eclipses and daily transits
Solar and Stellar Astrophysics
2013-02-06 v1 Instrumentation and Methods for Astrophysics
Abstract
The diameter of the Sun has been measured using Baily's beads during central eclipses, observed with portable telescopes. A blend of tiny emission lines produced in the first several hundred kilometers above the photosphere gives a light signal which prolonges the light curves of the beads. The simple criterion of light OFF/ON adopted in the previous approaches to define the timing of photosphere's disappearance/reappearance is modified. The technique of the limb darkening function reconstruction from the Baily's beads light curves is introduced here.
Cite
@article{arxiv.1106.2197,
title = {Towards a unified definition of solar limb during central eclipses and daily transits},
author = {Costantino Sigismondi and Andrea Raponi and Cyril Bazin and Richard Nugent},
journal= {arXiv preprint arXiv:1106.2197},
year = {2013}
}
Comments
9 pages, 6 figures, Proc. of the 2nd Galileo-Xu Guangqi Meeting, Ventimiglia - Villa Hanbury, Italy, 11-16 July 2010