  We have started a survey of galaxies at intermediate redshifts using the
HST-STIS parallel fields. Our main goal is to analyse the morphology of faint
galaxies in order to estimate the epoch of formation of the Hubble
classification sequence. The high resolution of STIS images (0.05'') is ideal
for this work and enable us to perform a morphological classification and to
analyse the internal structures of galaxies. We find that 40% of the 290
galaxies are early types and that there are more irregulars and ellipticals at
the fainter magnitudes.
