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By Thomas R. Williams

Based in 1911, the AAVSO boasts over 1200 participants and observers and is the world's biggest non-profit association devoted to variable famous person remark. This well timed e-book marks the AAVSO's centennial 12 months, proposing an authoritative and exact background of this crucial organization. Writing in an attractive and available type, the authors circulation chronologically via 5 eras of the AAVSO, discussing the evolution of its constitution and goal. in the course of the textual content, the focus is at the hundreds of thousands of people whose contributions have made the AAVSO's growth attainable. Describing a century of interplay among novice astronomers, the authors rejoice the collaborative relationships that experience existed through the years. because the definitive background of the 1st hundred years of the AAVSO, this article has vast charm and may be of curiosity to beginner astronomers, in addition to historians and sociologists of technological know-how normally.

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Extra resources for Advancing Variable Star Astronomy: The Centennial History of the American Association of Variable Star Observers

Sample text

These observations were made mainly by Oliver C. Wendell, William M. Reed, and Annie J. Cannon of the HCO staff and by amateur astronomer Frank E. Seagrave of Providence, Rhode Island. ” He soon followed it with a program of observations of 58 long-period variables made between 1890 and 1901. Although Pickering continued to expand his program of collection and publication of variable star data, he still had to rely on an informal network of amateur and professional astronomers. The observations again were made mainly by HCO staff Wendell, Reed, and Cannon, and Seagrave.

8. Members present during the second annual conference of the Society for Practical Astronomy (SPA), held at the University of Chicago, August 16–18, 1915. From left: S. F. Maxwell, Miss M. Mueller, R. B. Potter, C. A. Mundstock, Father A. Petrajtys, F. C. Leonard, H. F. Black, H. C. Levinson, Rev. R. F. Bumpus, H. W. Vrooman, W. Henry (from The Monthly Evening Sky Map, Vol. 9, No. 106, 1915). 72 Leonard remained an SPA director. 73 SPA VARIABLE STAR SECTION William Tyler Olcott of Norwich, Connecticut, served as the first leader of the SPA Variable Star Section upon Leonard’s invitation.

The Astronomical Society of France established a Variable Star Commission in 1901. The Astronomical and Astrophysical Society of America, formed in 1897, heard 21 papers on the subject of variable stars in its first 13 years, but as yet, there was no organized group devoted to variable star work in the Americas. Some observatories, like HCO, relied on their own corps of observers and published their own results; at other observatories, variable star work was the domain of one observer/analyst – John A.

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