  In this article we describe the search for white dwarfs (WDs) in the
multi-band photometric data of the Capodimonte deep field survey. The WD
candidates were selected through the V-R_C vs B-V color-color diagram. For two
bright objects, the WD nature has been confirmed spectroscopically, and the
atmospheric parameters (Teff and logg) have been determined. We have computed
synthetic stellar population models for the observed field and the expected
number of white dwarfs agrees with the observations. The possible contamination
by turn-off and horizontal branch halo stars has been estimated. The quasar
(QSO) contamination has been determined by comparing the number of WD
candidates in different color bins with state-of-the-art models and previous
observations. The WD space density is measured at different distances from the
Sun. The total contamination (non-degenerate stars + QSOs) in our sample is
estimated to be around 30%. This work should be considered a small experiment
in view of more ambitious projects to be performed in the coming years in
larger survey contexts.
