TS maps of V1723 Sco (left) and V6598 Sgr (right) during the optimal time period (see text). The value in TS is estimated in each pixel by fitting a point source with a power-law model (index fixed to 2). The green point is the optical nova position, the black one is the position found by gta.localize with the 68%, 95% and 99% containment radius. The white crosses are known γ-ray sources from the 4FGL catalog.