52.Gassendi

South-western part of mare Imbrium with countless ridges and a network of rays coming mostly from Aristarchus and Copernicus. Visible in larger telescopes, the rilles near Prinz.

AGATHARCHIDES - Agatarchides (Ἀγαθαρχίδης ) (Around 160 BC). Greek historian and geographer

Crater. (49Km /30Mi ø ) (Dept: 1,280m /3600ft) (19.8°S, 30.9°W) Damaged, lava flooded wall and a flat floor filled with dark lava. Ruins of central mountain.

DOPPELMAYER - Johann Doppelmayer (1671 – 1750) German astronomer and mathematician. Author of a Moon Chart.

Crater. (64km/38Mi ø ) (Dept: 2,700m/8,200ft) (28.5°N, 41.4°W)  Strongly eroded crater. Central mountain.

GASSENDI - Pierre Gassendi (1592 – 655) French philosopher, priest, scientist, astronomer, and mathematician. Publishing the first data on the transit of Mercury in 1631

Crater. (110 km /65Mi ø ) (Dept: 1,900m / 6,234ft) (17.5°S, 39.9°W) Circular formation. Resembling a ring with a pearl. (Gassendi A being the pearl)

HIPPALUS - Hippalus (Ἵππαλος) (1st century BC) Greek Navigator and cartographer. Found out how to sail to India from the red sea, using the monsoon.

Crater. (58km / 34Mi ø ) (Dept: 1.230m /3,700 ft) (24.8°S, 30.2°W) Crater remnant. The southwest rim of Hippalus is missing, and the crater forms a bay along the edge of the mare.

MARE HUMORUM - Sea of Moister (Named by Giovanni Riccioli).

Mare (389km/242Mi ø ) (24.4°S, 38.6°W) Circular formation.

PROMONTORIUM KELVIN - Promontorium Kelvin. Mountain named after Lord Kelvin (1824 – 1907) English scientist and inventor.

Cape (45Km/24Mi ø ) (26,93° S, 33,47° W) Triangular mountainous cape.

LOEWY - Moritz Loewy (1833 - 1907) Austrian Jewish Astronomer. Had to flee to France because of Anti-Semitism in Austria. Became director of the Paris Observatory in 1896, worked with Pierre Puiseux on an atlas of the Moon composed of 10,000 photographs, L’Atlas photographique de la Lune (1910).

Crater (22 × 26Km /13 x 17 Mi) (Dept: 1,100m/3,300ft) (22.7°S, 32.8°W) Oval formation

PUISEUX - Pierre Puiseux (1855 – 1928) French astronomer, worked with Moritz Loewy, taking 6000 photos of the Moon, for the Paris Moon Atlas. L’Atlas photographique de la Lune (1910).

Crater (25Km /15Mi ø ) (Dept: 400m/1,200ft) (27.8° S, 39.0° W) Lava flooded formation.

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