arly, the peninsular-shaped land mass has been referred to as “Barbara Mesa.” These are operational nicknames given to distinctive or unusual landmarks by the Apollo 10 astronauts.
Stereo Strip Photography
These are stereoscopic photographs of the area between Lade and Rhacticus Craters showing a chain of subround craters transverse to the Imbrium radial fractures (lower left-hand corner of left-hand frame). The objective of the stereo strip photography was to obtain vertical coverage of the lunar surface from terminator to terminator. This strip would be used to update the position of the features on the lunar surface. Each photograph was to overlap the previous photograph by approximately 60% to allow viewing of the surface from photograph positions separated by about 16 miles. This overlap would permit stereoscopic viewing of surface features and mathematical determination of their position.
Considerable photography was obtained during the Apollo 10 mission and landmark and tracking data were used to reduce the size of the landing ellipse for Apollo 11. During the mission, all nine magazines of 70-millimeter film and 15 of the 18 magazines of 16-millimeter film were exposed. Special care was taken in the selection, preparation, calibration, and processing of flight film to maximize the information retrieval from returned exposures. Processing standards similar to those for Apollo 8 film were used. No exposure problems existed on this mission and results are excellent. Approximately 70% of the total photographic objectives were accomplished, including about 75% of the requested lunar photography and about 60% of the specified targets of opportunity. Considerable farside photography was obtained, including some areas at the eastern limb where only poor imagery had existed. The photography also contains a number of views of the approaches to Landing Sites 2 and 3.