In the framework of the STREGA ( STRucture and Evolution of the GAlaxy ) survey , two fields around the globular cluster Pal 12 were observed with the aim of detecting the possible presence of streams and/or an extended halo .
The adopted stellar tracers are the Main Sequence , Turn-off and Red Giant Branch stars .
We discuss the luminosity function and the star counts in the observed region covering about 2 tidal radii , confirming that Pal 12 appears to be embedded in the Sagittarius Stream .
Adopting an original approach to separate cluster and field stars , we do not find any evidence of significant extra-tidal Pal 12 stellar populations .
The presence of the Sagittarius stream seems to have mimicked a larger tidal radius in previous studies .
Indeed , adopting a King model , a redetermination of this value gives r _ { T } = 0.22 \pm 0.1 deg .