\begin{table}%t1
\caption{\label{table:UJphot}Original survey and follow-up photometric observations of \secondqso.}
%\centerline
 {\begin{tabular}{lccllr}
\hline  \hline Filter & Original & Follow-up 
  & Observing date & Telescope & Exposure time \\ 
\hline 
$\iprime_\ab$ & 22.83~$\pm$~0.32 & 22.55~$\pm$~0.09 
  & 2008 January 8 and 12 & LT & $2 \times 1620\unit{s}$ \\ 
$\zprime_\ab$ & 20.13~$\pm$~0.12 & 19.99~$\pm$~0.03 
  & 2008 January 29 & NTT & 450\unit{s} \\ 
$Y_\vega$ & 19.22~$\pm$~0.06 & 19.10~$\pm$~0.03 
  & 2008 January 16 and 17 & UKIRT & $2 \times 300\unit{s}$ \\ 
$J_\vega$ & 18.69~$\pm$~0.05 & 18.76~$\pm$~0.03 
  & 2008 January 16 and 17 & UKIRT & $2 \times 300\unit{s}$ \\ 
\hline
\end{tabular}}
\par
\smallskip
All magnitudes are quoted in the natural system of the
  initial survey: AB for the optical SDSS bands and Vega for the NIR
  UKIDSS bands.  Note that the transmission profile of the
  $\zprime_{\rm{NTT}}$ filter differs somewhat from that of the SDSS
  \zprime\ filter (see \sect{followup}).
\end{table}