Top: H−K_S closeup. The red blob contours (red) are offset from the symmetrical light image’s peak contours (i.e. the center of the stellar bulge, in blue). Bottom: K_S band high pass filtered image closeup. The peak flux is offset from the photocenter of the K_S band. In both images, the red circle indicates the position of the peak value of the offset red blob, while the blue circle indicates the position of the center of the stellar bulge, as derived from our contour analysis. Their radii indicate the positional uncertainty of each position, which is ~7 mas. The yellow (top)/cyan(bottom) line is the length of the offset, namely ~50 mas.