'The Great Equatorial, Royal Observatory, Greenwich', 1891.
4 0 c m
actual image size: 31cm x 32cm

'The Great Equatorial, Royal Observatory, Greenwich', 1891.

© Science Museum / Science & Society Picture Library


Engraving of the 'Great Equatorial', a 12-inch refracting telescope at the Royal Observatory, Greenwich (now part of Greater London). Merz of Munich, Germany made the telescope lens in 1859, while other optical parts are by Troughton & Simms in London. The instrument is carried on an equatorial mounting designed by George Bidell Airy (1801-1892), the Astronomer Royal, which was made by Ramsome & Sims of Ipswich. The illustration is taken from 'The Midnight Sky: Familiar Notes on the Stars and Planets' by Edwin Dunkin (1821-1898), a popular account of the stars and planets published in 1891. Dunkin was employed at the Greenwich Observatory and rose to the position of chief asistant.

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