Top] [Prev] [Next] [Bottom] . Calibrated WF/PC-1 data from the pipeline are left with a residual geometric distortion; across a chip, from corner to corner, there is roughly a 1 pixel distortion in positional accuracy. This distortion can be removed, using the wmosaic task, which joins the four images into a single, correctly aligned and geometrically rectified, image; the residual distortion is about 0.1 pixels in both cameras. ...