The Lunar Apennines, 1845-1860.
© Science Museum / Science & Society Picture Library
Photograph taken 1850-1871 showing a plaster relief model of the Moon's surface centred on an unknown portion of the Moon. Constructed by James Nasmyth, a succesful industrialist and engineer, it is based on lunar observations made at his home in Kent, England, using a 20-inch reflecting telescope. Working from his Moon drawings, he calculated the height of the lunar features by measuring the length of their shadows. These were then photographed with suitable lighting to produce better results than could be achieved at the time with direct lunar photography. Nasmyth went on to photograph a whole series of his lunar models. They were used to illustrate the book, 'The Moon' that Nasmyth published in 1871 with James Carpenter.