  We have cross-correlated the 2dF QSO Redshift Survey (2QZ) white dwarf
catalog with the GALEX 2nd Data Release and the Sloan Digital Sky Survey (SDSS)
data release 5 to obtain ultraviolet photometry (FUV, NUV) for approximately
700 objects and optical photometry (ugriz) for approximately 800 objects. We
have compared the optical-ultraviolet colors to synthetic white dwarf colors to
obtain temperature estimates for approximately 250 of these objects. These
white dwarfs have effective temperatures ranging from 10 000 K (cooling age of
about 1Gyr) up to about 40 000 K (cooling age of about 3 Myrs), with a few that
have even higher temperatures. We found that to distinguish white dwarfs from
other stellar luminosity classes both optical and ultraviolet colors are
necessary, in particular for the hotter objects where there is contamination
from B and O main-sequence stars. Using this sample we build a luminosity
function for the DA white dwarfs with M_V < 12 mag.
