Abstract
THE COOKSON FLOATING ZENITH TELESCOPE.—This instrument was designed by the late Mr. Bryan Cookson, and presented at his death to the University of Cambridge Observatory; it was in use there for two years, and was lent in 1911 to the Royal Observatory, Greenwich, where it has been in use from 1911 to the present time. The observations are discussed in periods of seven or eight years, in order to separate the annual term from the 14-month term in the variation of latitude. The discussion of the observations of the second period (1919-1927) has just been published by the Royal Observatory in a small volume of 67 pages.
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Our Astronomical Column. Nature 123, 26 (1929). https://doi.org/10.1038/123026a0
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DOI: https://doi.org/10.1038/123026a0