\begin{table}%t2
\caption{\label{logUves}Log of the UVES observations and the obtained
final $S/N$ at a given spectral band.}
%\centerline
 {\small \begin{tabular}{lrrrr} 
\hline\hline 
Star & Exp. time & Wavelength & $S/N$ \\
                   &   (s)    &  (nm) &\\
\hline
MACHO~79.5501.13  & 3600      &  375.8--498.3  & 70\\ 
                   &           &  670.5--1008.4 & 100\\
MACHO~81.8520.15  & 3600      &  478.0--680.8  & 70\\
MACHO~81.9728.14  & 3600      &  478.0--680.8  & 65 \\
\hline
\end{tabular}}
\medskip
Note: The $S/N$ is measured in the middle of the spectral window covered.
\end{table}