ESOP 2022


Grazing Eclipse of a Red Giant (Antares 21.10.2009)

Increase and decrease of light is a mixture of  effects:


-.Diameter of the star

-.Frequence of the light (intervall of frequences)

A good paper about this effects is from Michael Richmond:

Influence of an intervall of frequences compared with a single line:

Infuence of the diameter of 20 milliarcseconds: