Includes station log, data reduction notes regarding calibration factors and clock corrections, and engineering aspects including equipment modifications and programming changes.

The McDonald Lunar Laser Station measured about 125 lunar range measurements between 12 February and 9 June, 1975. Preparations continued for a changeover to upgraded timing and guiding systems.

The four lunations between 19 February and 19 June, 1974 produced a lower number of lunar range measurements than is usual for this period of time. A laser modification conducted in early February was not completely ...

The four lunations ending 1 July 1973 produced 129 lunar range measurements, most of which had an accuracy to better than 15 cm. While no serious breakdowns occurred, a relatively large number of minor equipment problems ...

Summarizes the operations of each quarter with regard to ranging to the Moon as well as systems research. Also documents any anomalies in the data acquisition which pertain to possible modifications in the data reduction process.

During the four lunations covered by this report the operating crew was very successful in obtaining large quantities of lunar range data. Excellent weather conditions and the lack of appreciable equipment problems from ...