  We present high resolution Hubble Space Telescope ultraviolet spectroscopy of
the dwarf nova EK TrA obtained in deep quiescence. The Space Telescope Imaging
Spectrograph data reveal the broad Ly-alpha absorption profile typical of a
moderately cool white dwarf, overlayed by numerous broad emission lines of He,
C, N, and Si and by a number of narrow absorption lines, mainly of CI and SiII.
Assuming a white dwarf mass in the range 0.3-1.4Msun we derive
Teff=17500-23400K for the primary in EK TrA; Teff=18800K for a canonical mass
of 0.6Msun. From the narrow photospheric absorption lines, we measure the white
dwarf rotational velocity, v*sin i=200+-100kms. Even though the strong
contamination of the photospheric white dwarf absorption spectrum by the
emission lines prevents a detailed quantitative analysis of the chemical
abundances of the atmosphere, the available data suggest slightly sub-solar
abundances. The high time resolution of the STIS data allows us to associate
the observed ultraviolet flickering with the emission lines, possibly
originating in a hot optically thin corona above the cold accretion disk.
