Willson, Robert Wheeler, 1853-1922 · Boston, New York Ginn & company · leaf 128
defectsin the globe, the second point may bebrought to the ecliptic, and the readingshould be the same as on the equinoctial;if the readings differ, the mean of the valuesshould be taken. In the use of the compasses care mustbe taken not to scratch the surface of the Fig. 44. Length of Dipper 26°… … 116 LABORATORY ASTRONOMY as possible along the great circle between the stars, the readingswere: ij URSiE MAJORIS a URSJE MAJOEIS DlSTAKCE 0.0 26.0 26.0 CO 26.1 26.1 20.0 46.1 26.1 40.0 66.1 26.1 Here no difficulty was found in laying the arc along the greatcircle, as the distance is not great, and…
Astronomy
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