CMDs of detected stars from GHOSTS in the MUSE Halo (left) and outer disk (right) FoV. Magnitudes are corrected for Galactic extinction. The magnitude of the TRGB is 23.72 in the F814W filter and it is marked with a black dotted line. Green points represent the contamination from MW foreground stars estimated using the TRILEGAL model. The red and blue boxes are illustrative and indicate the regions in the CMD, where RGB and AGB stars are selected, respectively, both in the halo and disk fields. In the halo field, for stars brighter than the TRGB, the S/N allowed for individual radial velocity measurements. Three of these stars, highlighted with the small green, blue, and red boxes, have radial velocities greater than 400 km s⁻¹, which is the minimum velocity threshold we set to identify stars belonging to NGC 4945. Additionally, one of them falls within the AGB box (dashed light blue line). We marked this box differently from the one in the disk field to indicate where AGB stars would mainly be located in this field. However, these AGB stars are not added to the final stack spectrum; only the RGB stars are included. In the case of the outer disk, since the contamination from MW background stars is negligible compared to the number of NGC 4945 stars, both RGB and AGB stars were used in the final stack.