Rusell's lunar globe, 1792-1797.
© Science Museum / Science & Society Picture Library
This manuscript Moon globe was produced by the portrait artist, John Rusell RA (1745-1806). Mounted on a wooden base, it shows the lunar nearside and is the basis for a printed Moon globe published by Rusell in 1797. The globe was based on Rusell's accurate measurements and observations of the Moon, which he obtained by using a micrometer with his telescope. It bears a handwritten epigram by Nevil Maskelyne (1732-1811), the Astronomer Royal, bemoaning the fact that John Rusell did not then have a lunar crater named after him.