  We have used a combination of high-resolution Hubble Space Telescope WFPC2
and wide-field ground-based observations in ultraviolet and optical bands to
study the BSS population of the globular clusters NGC 6229 and M75. The
combination of different filters allows us to optimally select specific stellar
populations. In particular, the UV bands are ideal to study the hot objects
such as HB and BSS stars. In both these clusters, BSS are more segregated than
the normal stars. In NGC 6229 the BSS projected radial distribution is found to
be bimodal, with a high central peak, a well defined minimum at intermediate
radii, and an upturn in the outskirts, while no significant upturn in the BSS
frequency has been observed in the outskirts of M75, suggesting that these
clusters are in different dynamical evolutionary phases.
