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                                    Left.  Ridge Section 153; Right: Cropped 1200 dpi USGS color chart of same section                                            
Larger expanded version of color chart above
  USGS Charts 3040S-280300
Lunascan Project Quad Composite of Sections 142,143,152,153
USGS Composite of WAC Images 104,105,119,120
Original LAC 120 WAC in pdf

Ridge Section 153 is Oppenheimer, named after the large 208 km lunar impact crater on the lunar Far Side. It lies along the western outer rampart of the immense walled plain Apollo (Ridge Section 154). Nearby features of note include the dark-floored crater Maksutov to the southwest, and Davisson to the west-southwest (Section 152). The latter intrudes into the eastern rim of Leibnitz (also in Section 152), a feature about 20% larger than Oppenheimer. The outer rim of Oppenheimer is very nearly circular, but is broken in several locations by small craters. The most prominent of these is Oppenheimer H, lying against the inner wall and rim. In general the inner wall is unusually narrow along the western rim, but is much wider in the eastern half near where the rim approaches the Apollo basin. The interior floor is relatively level, particularly near the center. This floor has a lower albedo in several patches near the western rim. One of these patches contains the flooded crater Oppenheimer U. Near the northern and southern inner walls is a system of linear rilles in the surface. The far eastern half of the crater is marked by a ray system running north­south. (Credit: Some of the information used in the section feature descriptions was obtained from wikipedia.org. Section 153 and this directory was created by Fran Ridge and Ned Haskin of The Lunascan Project).