\begin{table}%t5
%\begin{center}
\par
\caption{\label{tab_maglim}Upper limits on the $B$, $V$ and $R$ magnitudes for the optical counterpart of \candzsf.}
\begin{tabular}{l c c c c}
\hline\hline
 Filter & $m_{\rm syn}$ & $\sigma_{\rm det}$ & $m_{\rm det}$ & $\log(F_{\rm{X}}/F_{\lambda})$ \\
\hline
 $B$ & 26.0 & 2.4 & 26.2(5) &  $\ga$~2.2\\ 
 $V$ & 25.5 & 2.5 & 25.9(4) &  $\ga$~3.1\\
 $R$ & 24.2 & 2.4 & 25.5(5) &  $\ga$~3.2\\
\hline
\end{tabular}
%\end{center}
\par
\end{table}