Pic du Midi drawings and map of Mercury

Upper row: 1942, Lyot – 25 drawings, 36 inch refractor, 300-500x magnification.

Lower row: 1950, A Dollfus, 60-inch refractor, 750-900x magnification

picdumidi-mercury2picdumidi-mercury

Lyot and Camichel, 1942:  Map from 12 composites. 23 markings were measured.

Source: A. Dollfus: Visual and photographic studies off planets at the Pic du Midi. In: Planets and Satellites, GP Kuiper and B Middlehurst, eds. Chicago Univ Press 543-571.

 

 

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Lowell’s map of Mercury (1902)

Source: P. Lowell:  New observations of the planet Mercury. 

Cambridge, J. Wilson and son, 1902. In Memoirs of the American academy of arts and sciences, n.8., v.12, no.4

The book also includes tens of drawings of Mercury.

According to the author, the planet is “covered with long narrow markings best explained as the result of cooling”, and Mercury “is a world as dead as the Moon, but differently brought to that condition”. The map shows an elliptical view because Lowell thought that Mercury is “an ellipsoid”.

lowell-mercurylowell-mercury-index

MIIGAiK’s Map of Mercury (1992)

Source: Bugaevsky L.M., Shingareva K.B., Krasnopevtseva B.V et al. Atlas Planet Zemnoi Gruppy i ih Sputnikov («Атлас планет земной группы и их спутников».). MIIGAiK, 1992. Moscow
Scale: 1:35 000 000
Note: This is a geologo-morphologic map. The Atlas contains several additional thematic maps of Mercury
The online version of the Atlas is available at http://www.planetmaps.ru/ru/projects/onlineatlas

 

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Base maps
Source