Report on the lunar ranging at McDonald Observatory for the period September 30, 1973 to February 18, 1974

Abstract

During the five lunations from September 30 to February 18, 1974, 224 lunar ranges were obtained. In most cases the accuracy was about t 20 cm for the first two lunations and improved to + or - 12 cm during the last two lunations. The success rate was high for the entire period (90%) with a lower acquisition rate during the last two lunations because of poor atmospheric seeing and loss of some observing time to Comet Kohoutek observations.