Drizzle has been found to impart no additional astrometric error on the images beyond our limitations on the ability to centroid on images which contain power that is not fully Nyquist sampled even when using pixels which are half the original size. Tests have been carried out to characterize the astrometric accuracy of drizzle (Fruchter and Hook 1997). The stellar images described in the previous section (Section 3.5) were again drizzled using the shifts obtained in the HDF WF2 F814W images. ...