\begin{table}%t1
%\centering
\par
\caption{Overview of the filters and exposure times used. The
limiting magnitude is for a point source with $S/N = 5$.
\label{tab:Exposure}}
\begin{tabular}{ccc}
\hline\hline
Filter & Exposure time & Limiting magnitude \\
\hline 
\bband & $4\times 680$~s = 2720~s & 27.3 $m_{B}$ \\
\vband & $4\times 340$~s = 1360~s & 26.5 $m_{V}$ \\
\iband & $4\times 340$~s = 1360~s & 25.8 $m_{I}$ \\
\hband$+ N$[II] & $4\times 680$~s = 2720~s & -- \\
\hline\\ \\
\end{tabular}
\end{table}