  V2051 Oph is an eclipsing dwarf novae with an orbital period of 90 min. This
system belongs to a small group of ultrashort period eclipsing dwarf nova
together with Z Cha, OY Car and HT Cas. We report a study of the spectra and
structure of the accretion disc of the V2051 Oph while the star was in an
unusual, faint brightness state during 1996. The analysis is based on
high-speed ultraviolet and optical spectroscopy secured with the Hubble Space
Telescope.
