Comparison of lunar maps of Hevelius and Riccioli, from Neuer Atlas (1707) by J.B. Homann and Atlas Coelestis (1742) by Johann Gabriel Doppelmayr
Left panel presents the lunar map as depicted by Hevelius in his Selenographia (1647), the work that laid foundations of lunar cartography. Hevelius introduced a specific nomenclature (associating lunar features with terrestrial locations) that was widely used until mid-18th century, when it was replaced by the convention established in Riccioli’s map (right, from Almagestum Novum (1651)). The standard nomenclature used nowadays is mostly based on Riccioli’s names. For example, the Sea of Tranquility was called Euxinus (historical name of Black Sea) in Hevelius’ map, while Tycho crater was named Mons Sinai (Mount Sinai).
