VHE γ-ray excess around the SNR G 15.4+0.1. The image has been corrected for the varying exposure across the FoV and has been smoothed with a 2D Gaussian with a width of 0.06°. The H.E.S.S. PSF for this analysis is shown in the bottom left inset. The color scale is chosen such that the blue-red transition occurs at roughly 4σ significance. The best-fit centroid of the γ-ray excess is indicated by a cross, the size of which corresponds to the sum of both statistical and systematic uncertainties. The green contours show the intensity (at 0.0175, 0.035 and 0.0525 Jy beam^-1) of the radio emission from the SNR shell, based on 90-cm VLA observations (Brogan et al. 2006).