A General Catalogue of Double Stars Within 121 ̊of the North Pole, Part 2 (Google eBook)

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Chicago, University of Chicago Press, 1906 - Double stars - 1086 pages
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Page i - ... known, and to supply this want he began to collect the material which has grown into the volumes before us. In the introduction he tells us how it came about. The small refractor, from the beginning, was used almost entirely for the observation of double stars. Objects were constantly found with it which could not be identified in any of the books at hand for reference. At that time there were few books in Chicago relating to double stars, and no complete catalogue existed of those then known....
Page i - ... and their libraries consulted; books were borrowed and their contents noted; books and memoirs were purchased, making the beginning of a library pertaining to this subject that has become practically complete. The manuscript catalogue formed at the outset at so great a cost of time and labor has been kept continuously posted to date, by the addition of all new stars and new measures from current publications. In order to make room for new material a second manuscript edition eventually became...
Page i - ... practically complete. The manuscript catalogue formed at the outset at so great a cost of time and labor has been kept continuously posted to date, by the addition of all new stars and new measures from current publications. In order to make room for new material a second manuscript edition eventually became necessary, and still later a third, which finally passed into the hands of the printer, and now appears in finished form. This work is in two parts. Part I, which is complete in itself, contains...
Page iii - The astronomer whose observations are given, and the number of nights on which complete measures were made. In many instances the angle...
Page i - In this laborious way manuscript copies were acquired of the material parts of nearly all publications relating to double stars.

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