\begin{table}%t2 
 \caption{Journal of photometric observations in the field of Collinder~21, NGC~5385,  and NGC~2664 
 and standard star fields (December~17--18, 2001).}\label{tab2} 
%\centering
\par
 \begin{tabular}{cccc} 
 \hline  \hline 
 \multicolumn{1}{c}{Field}    & 
 \multicolumn{1}{c}{Filter}    & 
 \multicolumn{1}{c}{Time integration}& 
 \multicolumn{1}{c}{Seeing}         \\ 
       &        & (s)     & ($\arcsec$)\\ 
 \hline 
  Collinder~21   &     &              &      \\ 
                 & $U$ &  15, 60       &  2.1 \\ 
                 & $B$ &  2, 5, 15      &  2.0 \\ 
                 & $V$ &  1, 3, 10, 10   &  2.1 \\ 
                 & $I$ &  1, 8         &  2.0 \\ 
  SA~93          &     &              &      \\ 
                 & $U$ &  120         &  1.9 \\
                 & $B$ &  60, 60       &  2.0 \\ 
                 & $V$ &  30, 30, 30    &  2.0 \\ 
                 & $I$ &  30, 30       &  2.0 \\ 
  NGC~5385       &     &              &      \\ 
                 & $U$ &  240         &  2.2 \\ 
                 & $B$ &  60, 60       &  2.1 \\ 
                 & $V$ &  15, 15       &  2.3 \\ 
                 & $I$ &  15, 15       &  2.3 \\
 PG~1047+003     &     &              &      \\ 
                 & $U$ &  120         &  1.9 \\
                 & $B$ &  60, 60       &  2.0 \\ 
                 & $V$ &  30, 30       &  2.0 \\ 
                 & $I$ &  30, 30       &  2.0 \\ 
 PG~0231+051     &     &              &      \\ 
                 & $U$ &  120         &  1.9 \\
                 & $B$ &  60, 60       &  2.0 \\ 
                 & $V$ &  30, 30       &  2.0 \\ 
                 & $I$ &  30, 30       &  2.0 \\ 
 PG~2331+055     &     &              &      \\ 
                 & $U$ &  120         &  1.9 \\
                 & $B$ &  60, 60       &  2.0 \\ 
                 & $V$ &  30, 30       &  2.0 \\ 
                 & $I$ &  30, 30       &  2.1 \\ 
  NGC~2664       &     &              &      \\ 
                 & $U$ &  15, 240      &  1.8 \\ 
                 & $B$ &  1, 10, 60     &  1.7 \\ 
                 & $V$ &  1, 5, 30, 30   &  1.8 \\ 
                 & $I$ &  1, 5, 30      &  1.8 \\
 \hline 
 \end{tabular} 
 \end{table}