  We present the results of a search for optical counterparts to the two
quiescent low mass X-ray binaries (X5 and X7) in the globular cluster 47
Tucanae, using high quality Chandra and HST images. A faint blue (V=21.7;
U-V=0.9) star within 0.03" of the eclipsing system X5 shows variability on both
short and long timescales, and is the counterpart of the X-ray source. The
colors and variability of this object are consistent with the combination of
light from an accretion disk and a red main sequence star (possibly somewhat
larger than a normal MS star with similar luminosity). No evidence is found for
a star showing either variability or unusual colors near the position of X7,
but a probable chance superposition of a star with V=20.25 limits the depth of
our search.
