Publisher's Synopsis
Excerpt from Observations Made With the Cookson Floating Zenith Telescope in the Years 1911-1918 at the Royal Observatory, Greenwich, for the Determination of the Variation of Latitude and the Constant of Aberration: Under the Direction of Sir Frank Dyson, M.A., LL. D., F. R. S. Astronomer Royal
The adjustment for collimation error. Is made by means of the screws which adj ust the frame carrying the central wire relatively to the frame on the end plate. It is necessary to adjust both ends of the frame, so that the wire is not inclined to the meridian.
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