  We report the first detailed spectroscopic observations of the recently
identified intermediate polar RXJ0028.8+5917/V709 Cas. We discovered that the
system shows significant EW ~ (2-4)A broad absorptions, affecting the Balmer
lines from Hdelta to Hbeta. These broad absorptions are interpreted as the
contribution of an underlying DA logg=8 white dwarf at a temperature of ~ 23
000 K, contributing ~ 17 % (at 4500 A) to the overall flux. This is the first
direct detection of a white dwarf in an intermediate polar system. The absence
of significant Zeeman splitting indicates a magnetic field lower than 10 MG,
confirming that, at least in some cases, intermediate polars have weaker fields
than polars.
