Magnitude range of images

["Dirk Terrell" <terrell@boulder.swri.edu>]

Those of you who have reduced Tom's images, what do you estimate the
useful range of magnitudes is in the V frames? We're surely saturated
at some point on the bright end (easy to find out) and barely detecting
at the other. By "useful" I mean the range over which we can hope to
measure the brightness of a variable to +/-5% at the faint end. A rough
idea will do at this point. I've found ~20 known eclipsing systems in
Tom's set of fields but I don't have a feel for how many we could get
good data on. The brightest is DP Cet (V=6.8), discovered by Hipparcos.

Dirk