Thomas Harriot (1560-1621) was an English astronomer, mathematician, ethnographer, and translator.
His observations were amongst the first uses of a telescope for astronomy.
Harriot is now credited as the first astronomer to draw an astronomical object after viewing it through a telescope: he drew a map of the Moon on July 26, 1609, preceding Galileo by several months.Harriot marked prominent features with numbers and letters - probably as positioning guidelines. Some can be easily identified with today's names:
1 - Plato
3 - Grimaldi
18 - Mare Crisium
38 - Tycho
b - Copernicus
c - Kepler
e - Aristarchus
h - Timocharis
x - Langrenus
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License: CC-by-SA 3.0
License of the map: Public Domain