• Don SpainEmail author
Part of the Astronomer's Pocket Field Guide book series (ASTROPOC)


Deslandres (142 miles) is a great ruined formation. To my eye it is in the shape of a great square. The walls are greatly eroded by later impacts and its great flat floor is the home of craters from 38 miles across to just craterlets and pits. There is a nice chain of craters on the northeast floor. The sun rises on Deslandres at first quarter and under its grazing rays there is great detail to see here, even in small scopes.

Lexell (38 miles) is partially ruined and part of its northern wall is open to the great plain of Deslandres. Its floor is rough and there is a nice central peak. Look for on the southeastern floor of Deslandres.

Ball (25 miles) a well formed crater with terraced walls and over 1½ miles deep. There is a massive central mountain over ½ mile high.

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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Louisville Astronomical SocietyLouisvilleUSA

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