Named for Wilhelm Gotthelf Lohrmann, an amateur astronomer and author of the famous lunar topographic atlas Topographie der sichtbaren Mon-doberfläche (1824). Lohrmann was director of the Dresden “Mathematisch-Physikalischer Salon”. When H.-U. Sandig founded the Institute of Geodetical Astronomy at the Dresden University of Technology in 1961, he chose the name of Lohrmann for his new institute, now known as the Lohrmann Observatory. (M 18461) _ _.