Sir John Herschel, English astronomer, c 1860s.

Mayall, John

 
Sir John Herschel, English astronomer, c 1860s.
4 0 c m
 
33cm
actual image size: 25cm x 32cm

Description

Photoglyphic engraving from daguerreotype by Mayall. Herschel (1792-1871) discovered 525 nebulae and clusters. He pioneered celestial photography, discovering the cyanotype or blueprint proces in 1842, and carried out research on photo-active chemicals and the wave theory of light. John Mayall (1810-1901) was one of the most commercially succesful photographers in London; he contributed to the popularity of carte-de-visites after producing some of Queen Victoria and the Royal family in the 1860s.

© Science Museum / Science & Society Picture Library

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