\begin{table}%T1
\caption{\label{tab_obs}Journal of Observations.}
%\centering
\par
\begin{tabular}{ccc}
\hline\hline
\multicolumn{3}{l}{\bf Spectroscopy} \\
\hline
\multicolumn{3}{l}{CAHA (PA = 121$^{\circ}$, width = 1.2$\arcsec$, 1998-08-27/28)}\\
\hline
Range:~$\lambda$ ({\AA}) &~$\Delta\lambda$ ({\AA}/pixel) & Exposure (s) \\
B: 3595--5225 & 0.81 &~$4\times1800$ \\
R1: 5505--7695 & 1.08 &~$2\times1800$ \\
R2: 7605--9805 & 1.08 &~$2\times1800$ \\
\hline
\multicolumn{3}{l}{HST/STIS (PA = $-154^{\circ}$, width = 0.2$\arcsec$,
2000-07-13)} \\
\hline
Range ({\AA}) & Exposure (s) & Data set \\
1447--3305 & 1440 & O5CO05010 \\
1075--1775 &  480 & O5CO05020 \\
1075--1775 & 2820 & O5CO05030 \\
\hline
\multicolumn{3}{l}{IUE (PA = 102$^{\circ}$, large aperture, 1980-10-03)} \\
\hline
Range &  Exposure (s) & Data ID \\
1150--1980 & 18~000 & SWP10273 \\
1850--3350 & 18~000 & LWR08943 \\
\hline
\hline
\multicolumn{3}{l}{\bf Imaging} \\
\hline
\multicolumn{3}{l}{HST/WFPC2 (Proposal: 5384, 1994-10-29)} \\
\hline
Filter & Exposure (s) & Data set \\
{\it F170W} &~$2\times350$ & U2C60701T/702T \\
{\it F336W} &~$2\times160$ & U2C60703T/704T \\
{\it F439W} &~$2\times180$ & U2C60801T/802T \\
{\it F547M} &~$2\times100$ & U2C60803T/804T \\
\hline
\multicolumn{3}{l}{JKT (1990-08-20/21)} \\
\hline
Band      & Filter & Exposure (s)      \\
H$\beta$  & 4861/54 &~$2\times1800$    \\
H$\alpha$ & 6563/53 & 1800             \\
H$\alpha$ continuum & 6834/51 & 1300   \\
\hline
\end{tabular}
\end{table}