Moon map by Wilhelm Lohrmann (1796-1840) based on observations made by him using a micrometer with a small refracting telescope by Fraunhofer. Lohrmann, a profesional cartographer, divided the Moon into 25 sections each of which he measured in detail. Charts of the first of these areas were published in 1820. Although working for sixteen years the intended lunar atlas was not printed in his lifetime. Dr Julius Schmidt (1825-1884), at the Athens Observatory, later posthumously published this map in 1878. Despite Lohrmann's efforts his map was overshadowed by the later work of Madler & Beer whose Moon map was first published in 1830.
© Science Museum / Science & Society Picture Library