Left panel: the disk tile d053 in the K_s band with its corresponding confidence map shown in the right panel. The brighter regions in the confidence map have a longer total exposure time, owing to the combination of the six pawprints. This image also includes two jitters at each pawprint position. Clearly visible in the lower left corner is a cluster of bad pixels (Chip 1). The six different positions correspond to the six pawprints, which are combined to fill the gaps between individual detectors.