Fig. 5
Examples of weight maps for MegaCam z′-band (left) and Ks-band (right). The pixel values are inversely proportional to the local variance of the image, and the areas of the pixel value of 0 are the regions without data. Crosses of clearly less weighted areas in MegaCam data are present owing to the gaps between detectors, while WIRCam data are relatively homogeneous.
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