  We discuss the real-space reconstruction of the optical galaxy density field
in the local Universe (cz < 6000 km/s) as derived from the 7076 galaxies of the
Nearby Optical Galaxy (NOG) sample (see Giuricin et al. 1999 in the same
volume). NOG is the currently best approximation to a homogeneous all-sky 3D
optically selected galaxy sample that probes in great detail volumes of
cosmological interest. Our final goal is to construct a reliable, robust and
unbiased field of density contrasts over a wide range of physical scales.
Exploring in detail the nature of the three dimensional galaxy distribution
will provide us with invaluable qualitative cosmographical information about
the topology and morphology of the local overdensities; but it also allows us
to investigate on the z=0 cosmology, greatly increasing our quantitative
understanding of physical parameters that constrain the evolution of structures
and their clustering properties. Moreover, its near full-sky coverage and the
large variety in galaxy content make the NOG ideal also for more specific tasks
as the deconvolution of environmental effects from the properties and evolution
history of the galaxies.
