\begin{table}%t2
 \caption{Parameters of the ATCA \hi{} observations. Observations were
obtained in four~different configurations, and combined (see Sect.~\ref{tab:radio_datasets}) for analysis.}\label{tab:radio_par}
\small%\centerline
{
 \begin{tabular}{p{2.2cm}p{2.5cm}p{3cm}}
   \hline
   \hline
   ATCA~array              & Date of obs.      & Maximum baseline \\
   \hline
   375                      & 1997 Oct.~3--4    & $459$~m\\
   750C                     & 1997 Oct.~25--26  & $750$~m\\
   750E                     & 1998 May~30      & $643$~m\\
   1.5D                     & 1997 Mar.~8, 10   & $3000$~m\\
   \hline
   \\
   \hline
   Property                        & 1.5D array                 & 375, 750C,
750E arrays       \\
   \hline
   Primary~beam                    & {\it HPBW} $\approx$ $33\arcmin$     &
{\it HPBW} $\approx$ $33\arcmin$     \\
   Correlator                      & FULL\_8\_512-128           &
FULL\_4\_1024-128          \\
   Channel width                   & $31.3$~kHz                 & $7.8$~kHz
\\
                                   & ($6.60$~\kms{})            &
($1.65$~\kms{})            \\
   Bandwidth                       & $8.00$~MHz                 & $4.00$~MHz
\\
                                   & ($1689$~\kms{})            &
($844$~\kms{})             \\
   Flux~calibrator                 & \object{PKS~1934-638}               &
\object{PKS~1934-638}               \\
   Phase~calibrator                & \object{PKS~0614-349}               &
\object{PKS~0614-349}               \\
   \hline
 \end{tabular}}
 \medskip
 Note: Antenna CA06 was not used with the 375, 750C and 750E~arrays.
\end{table}