\begin{table} %t1
\par
\caption{\label{tab:photometry}$UBV$ magnitudes of  the NGC~6752  and NGC~6397
BHB star sample.}
%is obtained from the superposition of observed 
%spectra with the synthetic ones. It stands for the correction in the radial velocity and heliocentric velocity}
%\centering
\par
\small\begin{tabular}{rl rr lc rr rr}
\hline
\hline
{Cluster}&{Star ID}&{Star ID}&{RA  (J2000)}&{Dec (J2000)}&{$U$}&{$B$}&{$V$}&
{$v_{\rm rad}$} &{\vsini{}} \\
 & & & & & & & &
{[km~s$^{-1}$]} &{[km~s$^{-1}$]} \\
%\multicolumn{1}{c}{T$_{eff}$-ZAHB}&
%\multicolumn{1}{c}{T$_{eff}$-col.-rel.}&
%\multicolumn{1}{c}{log(L/L$_{\odot}$)}&
%\multicolumn{1}{c}{log(M/M$_{\odot}$)}
\hline
NGC~6397  & 30511& T183-1& 17:40:20.057& $-$53:41:42.91& 13.944& 13.866& 13.858&21.1 & 8.5\\
         &        &  T183-2     &             &               &        &       &       &20.2 &\\
      & 53234& T191& 17:40:56.022& $-$53:35:07.39& 14.037& 13.969& 13.923& 21.5 & 10.0\\
      & 52839& T193& 17:40:57.460& $-$53:35:32.79& 14.014& 13.954& 13.922& 24.0 &8.0 \\
\hline
NGC~6752  & 22300& B652 & 19:11:31.490& $-$59:57:52.48& 14.337& 14.699& 14.783& $-$24.6 & 8.0\\
        & 28150& B2151-1& 19:11:01.965& $-$59:55:30.90& 14.202& 14.468& 14.554& $-$33.0 &2.5\\
        &   &   B2151-2     &             &      &         &               &       &$-$32.6&    \\
        & 22949& B2206& 19:11:00.931& $-$59:57:42.22& 14.202& 14.459& 14.532& $-$26.3 &2.5\\
\hline
\end{tabular}
\end{table}