\begin{table} %t2
\setlength\tabcolsep{4.5pt}
%\centering
\par
\caption{(1) $J,~H,~K_{\rm s}$ CFHT WIRCam Vega photometry and $z'_{AB}$ MegaCam 
  photometry of CFBDSIR1458. (2) $ J,~H,~K_{\rm s}$ NTT SOFI Vega photometry. 
 \label{mag}}
\begin{tabular}{lcccc} 
\hline\hline
Filter&$z'$&$J$&$H$&$K_{\rm s}$\\
\hline
Mag(1)&$23.60\pm0.24$&$19.66\pm0.02$&$20.12\pm0.13$&$20.60\pm0.37$\\
Mag(2)&--&$19.72\pm0.04$&$19.96\pm0.16$&$20.13\pm0.32$\\
\hline
\end{tabular} 
\end{table}