D. McNally's scientific contributions

Publication (1)

Article
Observation of the young Moon has from time to time suggested that the outer terminator of the illuminated crescent is less than the theoretical value of 180° often by a substantial margin. This phenomena is not observed at every new Moon. It is shown that deformations of the Moon's figure are insufficiently large to account for the observed effect...

Citations

... In 1932, Danjon [12] claimed that the moon could not be seen if its elongation is less than 7 • , thereafter referred to in the literature as "Danjon's limit". Many moonsighting campaigns led by McNally [13] and Schaefer [14] attempted to break that limit [15]; the results were recorded in tables and used by many others, such as Yallop [16] and Odeh [17]. ...