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                                    Left.  Ridge Section 157; Right: Cropped 1200 dpi USGS color chart of Section 157
                                            
Larger expanded version of color chart above
 Not found on USGS Chart
Lunascan Project composite of Sections 149, 150, and 157 and 158
LAC_130_WAC.pdf

Cassegrain  is Ridge Section 157, named after the lunar impact crater found on the lunar Far Side and beyond the southeastern limb. It lies to the southeast of the larger crater Lebedev (Ridge Section 148), and to the northeast of the comparably-sized Priestley (not shown). This region represents a sizeable area due to the lunar curvature and many of the features shown in the WAC 130 can't be properly displayed in our chart at the upper left.  The interior of this crater has a relatively dark-hued floor, a feature it has in common with other craters to the west and northwest that form part of the Mare Australe The floor is level and mostly featureless, except for some deposits in the northwest corner. The rim is more heavily worn in the northwest corner than elsewhere, and the remaining inner wall displays a slumped shelf below the rim. (Credit: Some of the information used in the section feature descriptions was obtained from wikipedia.org. Section 157 and this directory was created by Fran Ridge and Ned Haskin of The Lunascan Project).