  We present UBVRIz' optical images of the 0.32 square degree Extended Hubble
Deep Field South. This is one of four fields comprising the MUSYC survey, which
is optimized for the study of galaxies at z=3, AGN demographics, and Galactic
structure. We calculate corrected aperture photometry and its uncertainties and
find through tests that these provide a significant improvement upon standard
techniques. Our photometric catalog of 62968 objects is complete to a total
magnitude of R_AB=25. We select z=3 Lyman break galaxy (LBG) candidates from
their UVR colors and find a sky surface density of 1.4/sq. arcmin and an
angular correlation function w(theta) = 2.3+-1.0 theta^{-0.8}. (Abridged)

Astrophysics