Sgr core in equatorial coordinates. The 12 targets are denoted by a star marker, colour-coded by their metallicity from PIGS/AAT. Candidate Sgr members in the PIGS photometric footprint, following Vitali et al. (2022), are marked by grey dots. Black circles denote Sgr stars observed with AAT low-/medium-resolution (Sestito et al. 2024a). The red cross marks the position of the nuclear globular cluster M54 (NGC6715).