\begin{table}%t1
%\centering
\par
\caption{\label{config}WHT instrumental configuration.}
\par
\begin{tabular}{c c c c c }
\hline\hline
Spectral range  &       Disp.             & {\it FWHM} & Spatial Res.    & Exposure time    \\
    (\AA)             & (\AA~px$^{-1}$) & (\AA)    & (\arcsec~px$^{-1}$) & s \\
\hline
3670--5070   &       0.45              &  1.0      &   0.2   & $4\times 1200$	         \\
5500--7800  &       0.86             &  3.5      &   0.2     & $2\times 1200$	     \\
7600--9900  &       0.86             &  3.5      &   0.2     & $2\times 1200$	       \\
\hline
\end{tabular}
\end{table}