Proper motion vectors of dusty objects in the central stellar cluster of the Milky Way (see Table 4). We show the May 10, 2003, adaptive optics L′-band image of the central 4′′ × 4′′. The arrows indicate the uncertainties in amount (red or yellow portion of the otherwise green arrow) and angle of the measured proper motion derived from data between 2002 and 2008 in the H, K_s, and L′-bands (see Table 1).