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Visibility of lunar surface features - Apollo 14 orbital observations and lunar landing.Description of an in-flight visibility test conducted during the Apollo 14 mission for the purpose of validating and extending the mathematical visibility models used previously in the course of the Apollo program to examine the constraints on descent operations imposed by lunar visibility limitations. Following a background review of the effects on mission planning of the visibility limitations due to downsun lunar surface detail 'washout' and a discussion of the visibility prediction techniques previously used for studying lunar visibility problems, the visibility test rationale and procedures are defined and the test results presented. The results appear to confirm the validity of the visibility prediction techniques employed in lunar visibility problem studies. These results provide also a basis for improving the accuracy of the prediction techniques by appropriate modifications.
Document ID
19730031911
Document Type
Conference Proceedings
Authors
Ziedman, K. (TRW Systems Group Redondo Beach, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Subject Category
SPACE SCIENCES
Meeting Information
Annual Meeting on Technology for man 72(Los Angeles, CA)
Funding Number(s)
CONTRACT_GRANT: NAS9-8166
CONTRACT_GRANT: NASA TASK ASPO-88B
Distribution Limits
Public
Copyright
Other