John Herschel
(1870)
John Frederick William Herschel (1792-1871), English scientist and astronomer, c1870. Son of the astronomer William Herschel (1738-1822), he continued his father's work, discovering hundreds of nebulae and clusters, and mapped southern skies from South Africa. Coined the words 'photography', 'positive' and 'negative' and pioneered astronomical photography. From The World's Great Men (London, c1870). Engraving.