HST/FOC total intensity maps of 3C 109, observation ID 6927 through filter F342W, cropped to the central 2″× 2″. Left: Intensity map at the native spatial resolution without smoothing. No polarization is detected among individual pixels. Right: Intensity map at a spatial binning of 0.10″, smoothed using a 0.15″ FWHM Gaussian kernel. 4 pixels have [S/N]_P ≥ 3. The maps are zoomed in, the color-bar flux values and scale of the pixels differ between the two figures.