  We present results of an analysis of a UV image in the direction of
Ophiuchus, obtained with the FAUST instrument. The image contains 228 UV
sources. Most of these were identified as normal early-type stars through
correlations with cataloged objects. For the first time in this project we
identified UV sources as such stars by selecting suitable candidates in crowded
fields as the bluest objects in color-color diagrams using observations from
the Wise Observatory. These candidates were then studied using low-resolution
spectroscopy, which allowed the determination of spectral types to an accuracy
of about one-half class, for 60 stars. Synthetic photometry of spectral data
was performed in order to predict the expected UV emission, on the basis of the
photometric information. These results were used along with the Hipparcos/Tycho
information, to search for sub-luminous stars. The comparison of the predicted
emission with the FAUST measured magnitudes allowed us to select twelve stars
as highly-probable evolved hot stars. High signal-to-noise spectra were
obtained for nine of these stars and Balmer line profiles were compared with
the prediction of atmosphere models and with the spectrum of real stellar
atmospheres. Among the nine candidates, six are classified as previously
unrecognized sdB stars and two as white dwarfs. Our result indicates that
indeed more bright subluminous stars are still unrecognized in the existing
samples.
