Dark Ridge Observatory
Thomas C. Smith, Director
"High on the ridge and high on astronomical research and education"
Epsilon Aurigae


This page is dedicated to the long, 18 plus year, campaign conducted on the longest know eclipsing binary star having a period of approximatly 27 years.

The data contained hein was obtained using the Phoenix-10 telescope at the Fairborn Observatory, operated and maintained by Louis J. Boyd. The principal observer (PI) during the entire proect was Dr. Robert Stencel. The data being presented here is in its RAW form so that it can be preserved without interpretation or mainipulation. I direct your attention to the offical web site for this specific project located at:

Epsilon Aurigae

The reader is also refered to Chapter 13 in the book "Small Telescope & Atronomical Research, 2010. Eds Genet, Johnson, & Wallen" for the complete description of these data presented here.

This is a field of view showing Epsilon Aurigae along with the comparison star (COMP)
and the check star (CHECK) used during the 18+ years of photomelectric phometric readings.
This listing consists of the "format" file describing the "data" as well as the "night reports" followed by the actual "data" files and finally the "night report" files.
EpsilonAurigae/format
Data files
EpsilonAurigae/epsaur1987q3
EpsilonAurigae/epsaur1987q4
EpsilonAurigae/epsaur1988q1
EpsilonAurigae/epsaur1988q2
EpsilonAurigae/epsaur1988q3
EpsilonAurigae/epsaur1988q4
EpsilonAurigae/epsaur1989q1
EpsilonAurigae/epsaur1989q2
EpsilonAurigae/epsaur1989q3
EpsilonAurigae/epsaur1989q4
EpsilonAurigae/epsaur1990q1
EpsilonAurigae/epsaur1990q2
EpsilonAurigae/epsaur1991q4
EpsilonAurigae/epsaur1992q1
EpsilonAurigae/epsaur1992q4
EpsilonAurigae/epsaur1993q1
EpsilonAurigae/epsaur1993q4
EpsilonAurigae/epsaur1994q1
EpsilonAurigae/epsaur1994q2
EpsilonAurigae/epsaur1996q1
EpsilonAurigae/epsaur1996q4
EpsilonAurigae/epsaur1997q1
EpsilonAurigae/epsaur1997q2
EpsilonAurigae/epsaur1997q4
EpsilonAurigae/epsaur1998q1
EpsilonAurigae/epsaur1998q2
EpsilonAurigae/epsaur1998q4
EpsilonAurigae/epsaur1999q1
EpsilonAurigae/epsaur1999q2
EpsilonAurigae/epsaur2000q1
EpsilonAurigae/epsaur2000q2
EpsilonAurigae/epsaur2001q1
EpsilonAurigae/epsaur2001q4
EpsilonAurigae/epsaur2002q4
EpsilonAurigae/epsaur2003q1
EpsilonAurigae/epsaur2003q4
EpsilonAurigae/epsaur2004q2
EpsilonAurigae/epsaur2004q4
EpsilonAurigae/epsaur2005q1
"Night Report" files
EpsilonAurigae/nr1989q1
EpsilonAurigae/nr1989q2
EpsilonAurigae/nr1989q4
EpsilonAurigae/nr1990q1
EpsilonAurigae/nr1990q4
EpsilonAurigae/nr1991q1
EpsilonAurigae/nr1991q2
EpsilonAurigae/nr1992q1
EpsilonAurigae/nr1992q4
EpsilonAurigae/nr1993q1
EpsilonAurigae/nr1993q4
EpsilonAurigae/nr1994q2
EpsilonAurigae/nr1996q1
EpsilonAurigae/nr1996q2
EpsilonAurigae/nr1997q2
EpsilonAurigae/nr1997q4
EpsilonAurigae/nr1998q1
EpsilonAurigae/nr1998q2
EpsilonAurigae/nr1998q4
EpsilonAurigae/nr1999q1
EpsilonAurigae/nr1999q2
EpsilonAurigae/nr2003q4
EpsilonAurigae/nr2004q1
EpsilonAurigae/nr2004q2
EpsilonAurigae/nr2004q4
EpsilonAurigae/nr2005q1
Show below are typical plots of the data contained in a partial season in U, B and V magnitudes respectively
as compiled by Thomas C. Smith, Director of the Dark Ridge Observatory.