Five Spectroheliograph Photographs of the Sun

by John Evershed

$1,250 · Offered by Biblioctopus

c1920. A group of 5 spectroheliograph silver gelatin prints of the sun. Royal Observatory, Greenwich and Kodaikanal, India, 1906-1920. Printed c1920, mailed 1946. 2 prints approximately 7 ½ x 6 , 3 prints approximately 6 1/2 x 5 ¾ . 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. Original envelope with a

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