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Centennial Timeline

1596-08-13: Variability of Mira discovered by David Fabricius

1857-01-01: Stillman Masterman, "Observations of Algol-Minimum"

1871-01-02: Anne Sewell Young born

1873-01-11: William Tyler Olcott born

1878-01-01: S. C. Chandler publishes first of three articles on variable star observing


Advancing Variable Star Astronomy available as a Kindle e-book


The Advancing Variable Star Astronomy book that chronicles the first 100 years of the AAVSO is now available as an Amazon Kindle e-book. Of course, hard copies are still available from the AAVSO for $80 (20% discount), while supplies last.

2011 in 2011 Update

The following is a list of observers who have made 2011 visual observations in 2011. The list was last updated October 31, 2011.


New HQ Officially Dedicated

The AAVSO's new headquarters was officially dedicated at a ceremony during the 100th Annual Meeting of the AAVSO, part of our 2011 centennial celebrations.

The event was broadcast live on U-Stream. A video archive is still available on their servers.

Sky & Telescope has a nice news article covering the dedication and events surrounding it.

Here is some background and more information on the building.

Astronomy Now Interview w/Williams and Saladyga

Astronomy Now has posted an interesting dialog with the authors of  Advancing Variable Star Astronomy: Tom Williams and Michael Saladyga.

100th Annual Meeting - Schedule

October 4-8, 2011
AAVSO HQ, Cambridge, MA & Hilton Hotel, Woburn, MA

Tue, 10/4

All day

     Council Meeting - Current Council Members Only (@ AAVSO HQ)

Wed, 10/5


     Historical Paper Session: Women in AAVSO History; The History of Variable Star
Organizations (@ Woburn Hilton)


     Historical Paper Session: The History of Variable Star Organizations (@ Woburn Hilton)


New Logo Contest Deadline is Close

As part of the AAVSO's Centennial Celebrations we are holding a contest to design a new logo for the organization. This is just a quick reminder that the deadline for submission to the contest is July 1. As of this posting we have five submissions. Click here for more information on the logo contest and instructions on how to submit a design. 


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