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A description of the lunar ranging station at McDonald Observatory.The equipment of this station which has been in operation since the deployment of the first corner reflector by the Apollo 11 astronauts. The McDonald 2.7-m telescope is used for both transmission and reception of pulsed ruby laser light during three 45-minute daily laser runs about three weeks in a month. The present laser pulse width, timing system, calibration procedures, and signal levels are designed to achieve ranging with an accuracy to 1 nanosecond. The data rates obtained since September, 1970, are consistent with the scientific commitments of the lunar ranging program. Most of the over 200 acquisitions obtained have an accuracy to better than plus or minus 30 cm. Details of the telescope matching optics, guiding and timing equipment, and calibration procedures are discussed. Representative lunar range data are included.
Document ID
19730027447
Document Type
Conference Proceedings
Authors
Silverberg, E. C. (McDonald Observatory Fort Davis, Tex., United States)
Currie, D. G. (Maryland, University College Park, Md., United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Subject Category
FACILITIES, RESEARCH, AND SUPPORT
Meeting Information
Plenary Meeting on Space research XII(Seattle, WA)
Funding Number(s)
CONTRACT_GRANT: NGR-22-002-267
CONTRACT_GRANT: NGR-44-012-165
CONTRACT_GRANT: NGR-22-002-285
Distribution Limits
Public
Copyright
Other