Exposure-corrected excess image from the HESS data, smoothed with a Gaussian function of width 0.1° and overlaid with significance contours (4–6σ) in RADec J2000 coordinates. The circles show the half-mass radius (in black) and the larger tidal radius (in cyan) of the GC. The cross indicates the best-fit source position of HESS J1747−248, assuming a 2D Gaussian shape, with 1σ uncertainty on each axis. The rectangle represents the integration region used for the full-source spectral analysis. The upper-right corner circle illustrates the instrumental PSF.