\begin{table}%t4
\par
\caption{\label{om}Optical Monitor parameters and source fluxes for the three \xmm~observations.}
\small%\centering
\par
\begin{tabular}{lcccccc}
\hline
\hline
\noalign{\smallskip}
Filter & $\lambda_{\rm e}$\tablefootmark{a} & $A_{\lambda_{\rm e}}/A_{\rm V}$\tablefootmark{b} & $F_{\rm conv}$\tablefootmark{c}  &
$F_{4/10}$\tablefootmark{d}  &  $F_{26/9}$\tablefootmark{d}  & $F_{28/9}$\tablefootmark{d}  \\ 
\hline
\noalign{\smallskip}
$V$    & 5430 & 1.016 &$2.49   \times 10^{-16}$ & 11.84  & 14.51 &  14.42  \\
$B$    & 4500 & 1.293 &$1.29   \times 10^{-16}$ & 9.64   & 12.08 &  12.09  \\
$U$    & 3440 & 1.634 &$1.94   \times 10^{-16}$ & 7.48   & 9.79  &  9.78  \\
$UVW1$ & 2910 & 1.870 &$4.76   \times 10^{-16}$ & 6.12   & 8.27  &  8.14  \\
$UVM2$ & 2310 & 2.827 &$2.20   \times 10^{-15}$ & 5.57   & 7.74  &  7.71  \\
$UVW2$ & 2120 & 3.167 &$5.71   \times 10^{-15}$ & --     &  --   &  7.08  \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{The effective wavelength of the filter in \AA.}
 \tablefoottext{b}{The ratio of $A_{\lambda_{\rm e}}$, i.e. the extinction in
  magnitudes at the effective wavelength of the filter $\lambda_{\rm e}$, to $A_{V}$ (5500~\AA)
  obtained from the interstellar reddening curve given by \citet{ccm} and updated by \citet{odonnell}.}
  \tablefoottext{c}{The conversion factor from rate (Counts~s$^{-1}$) to flux
 (erg~cm$^{-2}$~s$^{-1}$\AA$^{-1}$) from the OM in-orbit calibration (see SAS watch-out page).}
 \tablefoottext{d}{The flux of PKS~2005$-$489, corrected for galactic extinction, 
measured in the three epochs (Oct. 4, 2005; Sept. 26 and 28, 2005). The units are mJy.}}
\end{table}