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In Las Fotos de los Lectores de La Vanguardia we can contemplate the sunset in Sant Feliu de Llobregat, where the king sun says goodbye with a great splendor, as if he wanted to tell us: “How hot!”
This great afterglow is dominated by anticrepuscular rays, which are similar to crepuscular rays, but seen on the opposite side of the sky from the sun.
The anticrepuscular rays are nearly parallel, but appear to converge at the antisolar point, due to linear perspective. They are most often visible at sunrise or sunset, as in this case.
Crepuscular rays are generally much brighter than anticrepuscular rays. This is because crepuscular rays, seen on the same side of the sky as the sun, are scattered by atmospheric light and made visible as small angles.
Although the anticrepuscular rays appear to converge at a point opposite the sun, the convergence is actually an illusion. The rays are actually (almost) parallel, and the apparent convergence is to the vanishing point at infinity.
