[AZ-Observing] Different Astronomy

Along with the different kinds of astronomy, photometry etc., is 
spectroscopy. The following link is my first feeble attempts at 
spectroscopy. It is a 10 minute exposure of Epsilon Aurigae taken on the 
evening of April 6-7, 2008. The large drop near the center of the line 
graph is the absorption line of H-Alpha. The spectra has not been 
heliocentric corrected, and it does make a difference not doing so.
http://users.commspeed.net/stanlep/EA_600sec.jpg
Stan
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