Residuals between the FORS2 (open circles), HST (triangles), and GeMS (filled circles) measured barycenter position of LUH 16 and the model of Eq. (8). The middle and upper panels are obtained assuming that offsets Δ are different for each telescope, while the lower panel shows the residuals in RA for the standard model of Eq. (8) with no offset (Δ = 0). The σ values refer to the average rms of residuals in RA and Dec for both HST and FORS2.