RGB image of GC covering all pointings of GNS from Nogueras-Lara et al. (2019a). Blue stands for the J band, green for the H band, and red for the K_s band. The white rectangle shows pointing 19 of GNS with its 4 chips, with the size of ∼7.95′×3.43′. The yellow square outlines one of the small fields of NICMOS/HST with the FoV of 51.2″ × 51.2″ and the green circle an HII region with strong Paschen-α emission labelled as H1 (Yusef-Zadeh & Morris 1987). The nuclear star cluster, the Quintuplet cluster, and the Arches cluster are also indicated.