Test statistics maps of the celestial region around 3FGL J1045.15941 as obtained by the likelihood analysis. The TS-value corresponds to the likelihood of the source being located in a specific grid point. Left plot: 0.2 to 10 GeV, right plot: 10 to 300 GeV. The confidence contours (green for the low band, white for the high band) mark the 68.3%, 95.4%, and 99.7% uncertainty regions for the location of the source of interest. The dashed yellow circle marks the cataloged 95% source location region of 3FGL J1045.15941. The nominal position of η Carinae is indicated by the yellow cross.