[SCIENTIFIC PHOTOGRAPHY]. [EVERSHED, John (1864-1956)]. A group of 5 spectroheliograph silver gelatin prints of the sun. [Royal Observatory, Greenwich and Kodaikanal, India, 1906-1917].

2 prints approximately 151 x 190 mm, 3 prints approximately 148 x 155 mm. All prints with manuscript captions on verso (in an unknown hand), 3 prints state that the photos were taken by J. Evershed, the others credited to the Royal Observatory. Some general edgewear, toning, prints lightly curled. Evershed was an English Astronomer and was the first to observe radial motions in sunspots (now referred to as The Evershed Effect); he made this discovery at the Kodaikanal Observatory in 1909 (one of the Royal Observatory photos is of sunspots).