\begin{table}%T1
\caption{\label{tab:imglog}\label{journal}Log of imaging observations with FORS1 and 2 of the three
surveyed fields. The $5\sigma$ detection limits are computed for a
3\arcsec\ diameter aperture. The data for BRI~1346$-$0322 and
Q~2138$-$4427 are reproduced from Paper~I.}
\small%\centerline
{
\begin{tabular}{lllll}
\hline\hline
Filter & $z_{\rm qso}$, $z_{\rm abs}$ & Total Exp. & PSF {\it FWHM} & 5$\sigma$\\
       & & time (h)  & ($\arcsec$)     & limit    \\
\hline
BRI~1202$-$0725 &4.70, 3.20\\
$N$ & & 8.3 & 1.02 & 25.6\\
$V$$^a$
  & & 2.9 & 0.96 & 26.6 \\
$R$ & & 1.6 & 0.95 & 26.1\\
\hline
BRI~1346$-$0322 & 3.99, 3.15 \\
$N$ & &  8.9    & 0.93  & 25.6\\
$B$      & &  2.5    & 1.02  & 26.6 \\
$R$      & &  1.7    & 0.94  & 26.0 \\
\hline
Q~2138$-$4427 & 3.17, 2.85 \\
$N$ & &  10.0   &  0.96  & 26.5\\
$B$      & &  2.5    &  1.04  & 26.9 \\
$R$      & &  1.7    &  0.93  & 26.3 \\
\hline
\end{tabular}}
\smallskip
$^a$  Due to the higher target redshift of this field the wavelength of the Ly$\alpha$-line was matched by the $V$-band rather than $B$. 
\end{table}