  We present a deep BVrI multicolor catalog of galaxies in a 5.62 sq.arcmin
field 80 arcsec south of the high redshift (z=4.7) quasar BR 1202-0725, derived
from observations with the direct CCD camera SUSI at the ESO NTT. The formal
5$\sigma$ magnitude limits (in 2 x FWHM apertures) are 26.9, 26.5, 25.9 and
25.3 in B, V, r and I respectively.
  Counts, colors for the star and galaxy samples are discussed and a comparison
with a deep HST image in the I band is presented. The percentage of merged or
blended galaxies in the SUSI data to this magnitude limit is estimated to be
not higher than 1%. At the same galactic latitude of the HDF but pointing
toward the galactic center, the star density in this field is found to be ~3
times higher, with ~20% of the objects with V-I > 3.0. Reliable colors have
been measured for galaxies selected down to r = 26. The choice of the optical
filters has been optimized to define a robust multicolor selection of galaxies
at 3.8 <= z <= 4.4. Within this interval the surface density of galaxy
candidates with r < 26 in this field is 2.7 +/- 0.4 arcmin^-2 corresponding to
a comoving density of Star Formation Rate at 3.8 <= z <= 4.4 of 10^{-2.00} -
10^{-1.82} h^3 Mo /yr/ Mpc^3.
