Distribution of the average image quality for VICS82, evaluated as the FWHM of 10⁴ point sources extracted from randomly selected image tiles for each of the CFHT (blue) and VISTA (red) observations. We achieve subarcsecond seeing across the majority survey in both J and ﹩{K}_{{\rm{s}}}﹩ bands (Table 2), with systematically better image quality in the VISTA tiles. The lower panels show the median average images of the 10⁴ sources for each telescope and band. Each panel is ﹩45^{\prime\prime} ﹩ on a side (the scale bar shows ﹩5^{\prime\prime} ﹩), and the images are normalized to unity at the peak. The contours are at levels of 0.01, 0.1, 1, and 10% of peak. These average PSFs are used in the completeness simulation described in Section 2.6.