\begin{table}%t1 \caption{\label{table:surveys}Instruments used with field of view (FOV), filters, and the central coordinates of the pointings.} {\footnotesize %\centerline {\begin{tabular}{l l l l l} \hline\hline Telescope & FOV & Filter & Integration time (h) &Pointing coordinates (J2000)\\ \hline\\[-3.25mm] CFHT MegaCam & $0.96{\degr}\times 0.94{\degr}$ & $z^\prime$ & 2.5 & 03$^{{\rm h}}$44$^{{\rm m}}$36$^{{\rm s}}$.00 +32$^{\circ}$01$^{\arcmin}$50${\farcs}$0\\ CFHT WIRCam& 20{\arcmin} $\times$ 20{\arcmin} & CH$_4$off, CH$_4$on &3.7, 1.4 & 03$^{{\rm h}}$44$^{{\rm m}}$14$^{{\rm s}}$.80 +32$^{\circ}$05$^{\arcmin}$06${\farcs}$0\\ CFHT WIRCam& 20{\arcmin} $\times$ 20{\arcmin} & $J$, $H$, $K_{\rm s}$ &0.35, 0.16, 0.12 \\ &A&&& 03$^{{\rm h}}$44$^{{\rm m}}$14$^{{\rm s}}$.80 +32$^{\circ}$05$^{\arcmin}$06${\farcs}$0\\ &B&&& 03$^{{\rm h}}$44$^{{\rm m}}$14$^{{\rm s}}$.80 +32$^{\circ}$15$^{\arcmin}$06${\farcs}$0\\ &C&&& 03$^{{\rm h}}$45$^{{\rm m}}$02$^{{\rm s}}$.00 +32$^{\circ}$05$^{\arcmin}$06${\farcs}$0\\ &D&&& 03$^{{\rm h}}$45$^{{\rm m}}$02$^{{\rm s}}$.00 +32$^{\circ}$15$^{\arcmin}$06${\farcs}$0\\ \hline \end{tabular}}}\medskip \par The $J$, $H$ and $K_{\rm s}$ final WIRCam images are made up of four overlapping fields (A, B, C and D). \end{table}