Derived mass functions for Wd1 as a function of distance from the cluster centre for a Siess et al. (2000) 4 Myr isochrone shifted to a distance of 4.8 kpc. For each annulus, the arrow indicates the 50% completeness limit as determined in the artificial star experiments. The solid lined histograms illustrate the completeness corrected number counts whereas the dashed lined histograms illustrate the detected number of stars. Power-law fits are performed down to a mass limit of 1 M_⊙ and shown as solid lines.