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Excerpt from Observations of Double Stars<br/><br/>It appears from this table that at all distances to which the observations extend the measurements of direction are more precise than those of distance and that this dif ference is especially marked in the case of very close and difficult Objects, agreeing in this respect with the experience of most other observers. This superior accuracy of the position angles in the present case is the more remarkable from the circum stance that the distances in general depend upon a greater number of settings of the micrometer than do the position angles, the normal number of pointings being from three to five settings of the position circle and either two or three double distances, i. E. Four to six pointings, for the distance between the stars.
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Observations of Double Stars (Classic Reprint)
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Paperback. Zustand: New. Print on Demand. This book is a detailed collection of observations of double stars made by the author with the 400 mm equatorial telescope of the Washburn Observatory over a period of several years. The stars observed cover a wide range of brightness, separation, and relative motion. The author provides detailed information on the methods and instruments used in making the observations, including a discussion of the errors and limitations of the measurements. The book also includes a comprehensive summary of the data collected, with mean values for the position angle and distance of each double star observed. These observations are important for understanding the physical properties of double stars and their evolution over time. The author's careful and meticulous observations provide a valuable resource for astronomers studying these fascinating celestial objects. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781334033247_0
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Observations of Double Stars Classic Reprint
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