\begin{table}%t1
\caption{Journal of spectroscopic observations. The HJD zero point is 2~452~500.}\label{tab1}
 %\centering
\small
  \begin{tabular}{lccccc}
\hline \hline
Object &ID & HJD (blue-spec) & exptime (s) &HJD (red-spec)  & exptime (s)  \\
\hline
 OGLE00433691-7326377  &  SMC3-1  &  56.55708   &  900   & 58.55686                     &  900    \\
 OGLE00445466-7328029  &  SMC3-2  &  56.49586   &  600   & 58.54036, 58.54399, 58.54763 &  300    \\
 OGLE00455414-7314043  &  SMC3-3  &  56.50746   &  900   & 59.64039, 59.64402, 59.64766 &  300    \\
 OGLE00463376-7312043  &  SMC3-4  &             &        & 59.50340, 59.51515, 59.52640 &  900    \\
 OGLE00475014-7313164  &  SMC3-5  &  56.52092   &  900   &                              &         \\
 OGLE00492141-7258449  &  SMC3-6  &  56.62733   &  900   &                              &         \\
 OGLE00502564-7258071  &  SMC3-7  &  56.53294   &  900   &                              &         \\
 OGLE00504344-7327053  &  SMC3-8  &  56.54504   &  900   & 58.52697, 58.53061, 58.53425 &  300    \\
 OGLE00510018-7253039  &  SMC3-9  &  56.64137   &  900   & 58.59654                     &  900    \\
 OGLE00510759-7326366  &  SMC3-10 &             &        & 59.54330                     &  900    \\
 OGLE00535922-7235089  &  SMC3-12 &  56.56884   &  900   &                              &         \\
 OGLE00552027-7237101  &  SMC3-14 &  57.56598   &  900   & 59.65760                     &  900    \\
 OGLE00574525-7235321  &  SMC3-15 &  56.58069   &  900   &                              &         \\
 OGLE00581258-7230485  &  SMC3-16 &  56.65358   &  900   & 58.60897                     &  900    \\
 OGLE01000078-7255229  &  SMC3-18 &  56.59264   &  900   &                              &         \\
 OGLE01045121-7246469  &  SMC3-20 &  56.60425   &  900   & 58.57019                     &  900    \\
 OGLE01045299-7159188  &  SMC3-21 &  56.61592   &  900   &                              &         \\
 \hline
\end{tabular}
\end{table}