On the chart the northeastern edge of the Moon, and parts of Mare Frigoris. To orientate ourselves we use the crater pair Strabo and Thalus, and the three Strabo craters.
BAILY - Francis Baily. (1774 - 1844) English Entrepreneur who after 1825 concentrated on astronomy alone. Discovered "Baily's beads" The well know phenomena of sunlight playing with the edge of the moon during a Solar eclipse.
Crater- (27 km /16 Mi ø ) (49.7°N, 30.4°E) Broken wall. In the south-east partially broken formation, steep slopes, high walls supporting an incomplete crater to the north-east and damaged in the south. Flat floor. Central rille.
Crater. (136 km /82 Mi ø ) (59.1°N, 53.0°E) Eroded walled plain. Damaged steep slopes supporting Strabo to the north. Dislocated walls. Flat floor supporting De La Rue I and a large craterlet to the center. Lines of crests, cracked hills and craterlets.
Crater. (105 Km /62 Mi ø ) (Depth: 1,300 m) (59.1°N, 34.6°E) Remains of a Walled plain. Halve circular formation with steep slopes supporting Gärtner A to the north-east and Gärtner G and F to the east. High walls flooded by lava to the south in Mare Frigoris. Flat floor filled with lava. Gärtner D to the south and Rima Gärtner to the East. Hills and craterlets.
Crater. (90Km/53Mi ø ) (64.7°N, 85.2°E) Western inner side is permanently hidden from sight. Observation of this crater is affected by libration, which can completely hide this crater from sight. This crater lies across the northwestern rim of the walled plain Belkovich, to the north of the Mare Humboldtianum isolated from other craters, the nearest being Cusanus. Not much eroded, circular, uneven rim and an inner wall with terraces. The southern rim joins the eroded rim of Belkovich. The interior flat floor has several ridges that lie near the interior midpoint. Valleys, peaks, smaller hills, central peaks.
STRABO - Strabon. (Στράβων) (About 63 BC - 19 AD) Greek historian and Geographer. His book "Geographia" has been preserved. It is still one of the most important Works of its kind brought to us from the Ancient World.
THALES - Thales of Miletus.(Θαλῆς ὁ Μιλήσιος) (About 625 - 545 BC) Mathematician, founder of Greek land surveying, materialist, philosopher. Calculated the solar eclipse of 585 in advance. Theory of water being the founding principle element of the world.