Astronomical Links

• American Association of Variable Star Observers  The AAVSO is a non-profit worldwide scientific and educational organization of amateur and professional astronomers who are interested in stars that change in brightness - variable stars.

• Center for Backyard Astrophysics  A global network of small telescopes dedicated to photometry of cataclysmic variables.

• Light Curve Modeling for Eclipsing Binaries  Starlight Pro software.

• A Short Guide to Celestial Navigation by Henning Umland.  Theory behind the mechanics of celestial navigation.

• The Equation of Time  Graphics and annimations explain the analemma .