Monday, 3 March 2014

THE MOON - Cleomedes and Mare Crisium

Coordinates on the Moon: 27° 42′ 0″ N, 55° 30′ 0″ E  (27.7°, 55.5°) 


Diameter : 130 km

A large oblong enclosure, 78 miles in diameter, with massive walls, varying in altitude from 8000 to 10,000 feet above the interior.

The most noteworthy features in connection with the circumvallation are the prominent depressions on the E. wall. Under a rising sun, when about one-fourth of the floor is in shadow, three of these can be easily distinguished, each resembling in form the analemma figure.

Mare Crisium and Cleomedes

There are two other curious depressions at the S.E. end of the formation. On the dark steel-grey floor are two irregular dusky areas, and a narrow but bright central mountain, on which, according to Schmidt, stand two little craters.

Afocal photo through a 25mm plossl, 350D and 80/400