Earth-based telescopic image                    Cropped Lunar Orbiter image
Image above by ESO 
Full sized  version of Lunar Orbiter
The crater Flamsteed, in the  SW corner of the Moon in Section 40, is an extremely interesting target in that southern part of Oceanus Procellarum. The crater is 21 km wide and 2160 meters deep and is the largest of the conspicuous craters in that photo. However, the larger, tear-drop-shaped area in the upper left image (clearly round in the overhead Lunar Orbiter image at upper right) is the flooded crater Flamsteed P.  On June 2, 1966, Surveyor 1 landed close to the remains of the NE wall of this crater . 
Other Lunar Orbiter images
For the latest information and images regarding this section, including Apollo Hasselblad (H), Metric (M), and Panoramic (P) images, go to:
Section 40
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This web page was created by Francis Ridge for The Lunascan Project:
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