  The success of the first measurement of the light bending by the solar
gravitational field is due to the particular stellar field during the
Eddington's 1919 total eclipse of the Sun, near the Hyades, giving the
opportunity to measure the gravitational bending of the light to the
astronomers in two expeditions in Brazil, Sobral, and on the Principe Island in
the Atlantic Ocean. The geometrical properties of this field and another field
in Leo are discussed in view of repeating this experiment of General Relativity
with SOHO satellite data in the context of the International Year of Light
2015.
