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Directory Sites
American Association of Variable Star Observers
The largest organization for variable stars: provides professional and amateur collaboration, research, and analysis of variable star observations.
www.aavso.org
General Catalog of Variable Stars Research Group
Research group working on the GCVS, Sternberg Astronomical Institute, Moscow, Russia. Includes catalogs and publications.
www.sai.msu.su
Information Bulletin on Variable Stars
The IBVS is a bulletin of Commissions 27 and 42 of the International Astronomical Union, published by Konkoly Observatory, Budapest, Hungary.
www.konkoly.hu
Collaborative Project aimed at getting new people involved in variable star observing.
www.eso.org
Astronomical Society of South Australia
ASSA's variable star group. News, FAQ, charts, and software.
www.assa.org.au
The Cepheid Distance Scale: A History
A critical review of the Cepheid distance scale, from its inception, to the Hipparcos mission and beyond.
institute-of-brilliant-failures.com
A Ritzian Interpretation of Variable Stars
A study on the nature of the speed of light in space using light curves and spectroscopic observations of variable stars as evidence.
www.datasync.com
Skyandtelescope.com - Variable Stars
Observing variable stars.
skytonight.com
The Top Twelve Naked-Eye Variable Stars
An article by John Isles from Sky and Telescope Magazine.
skytonight.com
An article by Alan MacRobert from Sky and Telescope Magazine about the star Algol (Beta Persei) was the first eclipsing variable star ever discovered.
skytonight.com
Brigham Young University Variable Star Database
Currently contains 311 stars which have been classified as Delta Scutis or Gamma Doradus in some published source.
astronomy.byu.edu