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The results of a spectroscopic survey of epsilon Aurigae during eclipse usinga network of small telescopes are presented. The spectra have a resolution of0.35 to 0.65{\AA} and cover the period 2008 to 2012 with a typical interval of4 days during eclipse. This paper specifically covers variations in the K I7699{\AA}, Na D and Mg II 4481{\AA} lines. Absorption started increasing in theKI 7699{\AA} line 3 months before the eclipse began photometrically and had notreturned to pre eclipse levels by the end of the survey March 2012, 7 monthsafter the brightness had returned to normal outside eclipse levels. Thecontribution of the eclipsing object to the KI 7699{\AA} line has been isolatedand the data show the excess absorption increasing and decreasing in a seriesof steps during ingress and egress. This is interpreted as an indication ofstructure within the eclipsing object. The F star is totally obscured by theeclipsing object at the Na D wavelength during eclipse. The radial velocity ofthe F star and the mean and maximum radial velocity of the eclipsing materialin front of the F star at any given time have been isolated and trackedthroughout the eclipse. The quasi-periodic variations seen in the F star RVoutside eclipse continued during the eclipse. It is hoped that these resultscan be used to constrain proposed models of the system and its components.

High cadence measurement of neutral sodium and potassium absorption during the 2009-2011 eclipse of epsilon Aurigae