\begin{table}%t1
\caption{Log of the observations for NGC~6752. Date and time are UT, exposure
times are in seconds. For both exposures the field center is at
RA(2000)~= 19:10:51.780, Dec(2000)~= $-$59:58:54.70.}\label{t:log}
%\centering
\small
\begin{tabular}{rcccc}
\hline \hline
Grating &Date       &UT$_{\rm beginning}$ &Exptime &Airmass \\
\hline
HR11   & 2004-06-25  & 09:54:29  & 1750 &1.787\\ 
HR13   & 2004-06-23  & 09:41:13  & 1750 &1.677\\ 
\hline
\end{tabular}
\end{table}