Top: differences in angular separation and position angle as a function of angular separation. In both plots, a dashed orange line at a difference of zero is shown to guide the eye, and the solid orange lines indicate the ±1σ in estimated internal repeatability of individual measures as a function of angular separation. For differences in separation, this value is the standard deviation of the measures, and for position angle this value is proportional to arctan ﹩\left(\tfrac{\delta \rho }{\rho }\right)﹩. The solid black line indicates the formal diffraction limit of the LDT. Bottom: differences in angular separation and position angle as a function of delta magnitude. A dashed orange line at a difference of zero is shown to guide the eye.