\begin{table}%t1
\caption{\label{obstable}Summary of the observations. The last
column gives the signal-to-noise at 8700~\AA.}
%\centering
\small
\begin{tabular}{llllll}
\hline\hline
Epoch & Date & $t_{\rm exp}$ & {\it FWHM} & Airmass & $S/N$\\
 & & (s) & (arcsec) & &\\
\hline
1 & 2005-04-05 & 1200 & 0.9 & 1.46 & 280\\
2 & 2005-11-19 & 1800 & 0.9 & 1.61 & 330\\
3 & 2006-04-02 & 1500 & 0.6 & 1.41 & 400\\
4 & 2006-12-06 & 1800 & 0.9 & 1.50 & 315\\
5 & 2007-04-04 & 2500 & 0.7 & 1.43 & 440\\
6 & 2008-01-05 & 2500 & 0.8 & 1.41 & 560\\
7 & 2008-04-08 & 2640 & 1.1 & 1.42 & 410\\
\hline
\end{tabular}
\end{table}