Four views of Jupiter, 1872.
© Science Museum / Science & Society Picture Library
Lithographic colour print isued by Harvard College Observatory in 1876, showing four sketches of the planet Jupiter. Produced in 1872 by Etienne Leopold Trouvelot (1827-1895), a French artist, these views were produced using the observatory's 15-inch refracting telescope made by Merz of Munich, Germany. They show the planet's characteristic cloud belts with festoon structures within that have been now been resolved in detail by robot spacecrafts such as Voyager. At this time, drawings made at the telescope using only the eyes showed more detail than could be produced using the insensitive photographic plates then available.