\begin{table}%t2
      \caption{\label{spectra}Spectral log.}
         \small%\centerline
{
\begin{tabular}{lllll}
\hline \hline           \noalign{\smallskip}
	Slit centers &  & Area & Total exp. time$^{a}$ & \\
\hline\\[-3mm]
	 $\alpha$ & $\delta$ & & (No of spectra$^{b}$)  &  \\
%\hline 
 20\h50\m12\s & 51\degr20\arcmin58\arcsec & I	& 7200 (2)\\
%\hline
 20\h51\m04\s & 50\degr46\arcmin32\arcsec & II	& 7200 (2)\\
 %\hline
 20\h45\m20\s & 50\degr04\arcmin32\arcsec & III	& 3600 (1)\\
 %\hline
 20\h43\m21\s & 49\degr27\arcmin55\arcsec & IV	& 7200 (2) \\
 %\hline
 20\h39\m39\s & 50\degr03\arcmin28\arcsec & V	& 3600 (1) \\
 %\hline
 20\h43\m58\s & 50\degr51\arcmin04\arcsec & VI	& 7200 (2)\\
 %\hline
 20\h41\m43\s & 51\degr00\arcmin50\arcsec  &VII	& 3600 (1) \\
\hline
\end{tabular}}
\smallskip
${^a}$ Number of spectra obtained.
${^b}$ Total exposure times in s.
   \end{table}