\begin{table}
\caption{\label{obs_tab}Log of observations.}
\par
%\centerline
 {
\begin{tabular}{llllllll}
\hline\hline\noalign{\smallskip}
Object & Date$^1$ & HJD$^1$ & Telescope & Configuration$^2$ 
& $n_{\rm data}$ & $t_{\rm exp}$ [s] & $\Delta t$ [h] \\
\hline\noalign{\smallskip}
EC~12477--1738 & 2003-04-08 & 2~452~738 & 0.9 m & CCD+$R$ 
& 120 & 60/90    & 3.35 \\
              & 2003-04-09 & 2~452~739 & 0.9 m & CCD+$R$ 
& 70  & 90/180   & 4.08 \\
              & 2003-04-10 & 2~452~740 & 0.9 m & CCD+$R$ 
& 60  & 180      & 3.84 \\
              & 2007-04-03 & 2~454~194 & 4.0 m & KPGL3, 3565--7240, 4.8
& 7   & 900/1200 & 8.28 \\
              & 2007-04-05 & 2~454~196 & 4.0 m & KPGL3, 3565--7240, 4.8
& 9   & 900/1200 & 8.97 \\
EC~13349--3237 & 2003-05-15 & 2~452~775 & 0.9 m & CCD+$R$
& 50  & 180/240  & 4.57 \\
              & 2003-05-16 & 2~452~776 & 0.9 m & CCD+$R$
& 47  & 240      & 3.68 \\
              & 2003-06-20 & 2~452~811 & 0.9 m & CCD+$R$
& 81  & 240      & 6.28 \\
              & 2003-06-21 & 2~452~812 & 0.9 m & CCD+$R$
& 77  & 240      & 5.98 \\
              & 2007-04-03 & 2~454~194 & 4.0 m & KPGL3, 3565--7240, 4.8
& 7   & 900/1200 & 7.59 \\
              & 2007-04-05 & 2~454~196 & 4.0 m & KPGL3, 3565--7240, 4.8
& 9   & 900/1200 & 8.67 \\
EC~14329--1625 & 2003-06-18 & 2~452~809 & 0.9 m & CCD+$R$
& 119 & 90       & 4.16 \\
              & 2003-06-19 & 2~452~810 & 0.9 m & CCD+$R$
& 120 & 90       & 4.54 \\
              & 2005-04-25 & 2~453~486 & 0.9 m & CCD+$R$
& 9   & 150      & 3.57 \\
              & 2005-04-28 & 2~453~489 & 0.9 m & CCD+$R$
& 27  & 150      & 8.35 \\
              & 2005-04-29 & 2~453~490 & 0.9 m & CCD+$R$
& 36  & 150      & 7.88 \\
              & 2005-05-24 & 2~453~515 & 0.9 m & CCD+$R$
& 12  & 150/300  & 5.14 \\
              & 2005-05-26 & 2~453~517 & 0.9 m & CCD+$R$
& 14  & 180      & 4.95 \\
              & 2007-04-03 & 2~454~194 & 4.0 m & KPGL3, 3565--7240, 4.8
& 7   & 600/900  & 7.64 \\
              & 2007-04-05 & 2~454~196 & 4.0 m & KPGL3, 3565--7240, 4.8
& 8   & 600/900  & 8.37 \\
\hline
\end{tabular}}
\medskip
\par
1) start of night; 2) grism/grating, wavelength range, and spectral FWHM resolution in {\AA}.
\end{table}