Wilhelm Gotthelf Lohrmann

Wilhelm Gotthelf Lohrmann (31 January 1796 – 20 February 1840) was a Saxon cartographer, astronomer, meteorologist and patron of the sciences.

In 1821 he made observations of the Moon, enabling him to produce a Mondkärtchen (lunar map).

This map was further developed in 1824 as Topographie der sichtbaren Mondoberfläche ("Topography of the visible surface of the moon"), and the four sections are now stored as a historical work at the Technische Universität Dresden library.

In 1878, Johann Schmidt edited and published all 25 sections of the map as Mondkarte in 25 Sektionen.

Wilhelm's instrument would later be used by Samuel Heinrich Schwabe for his observations of the Sun and sunspots.