Laser Transit-Time Measurements between the Earth and the Moon with a Transportable System

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Science  01 Jun 1973:
Vol. 180, Issue 4089, pp. 954-955
DOI: 10.1126/science.180.4089.954


A high-radiance, pulsed laser system with a transportable transmitting unit was used at Agassiz Station, Harvard College Observatory, Harvard, Massachusetts, to measure the transit times of 25-nanosecond, 10-joule, 530-nanometer pulses from the earth to the Apollo 15 retroreflector on the moon and back.