\begin{table}%t1
\caption{\label{tab:obs}Summary of observations.}              
\small
%\centerline
{
\begin{tabular}{r r r r r r r r r r}         
\hline\hline  
Proto-cluster  & Instrument & FOV & Filter & Grating & Spectral coverage$^a$ ($\mu$m)& UT Date Obs. & Total Exp. \\
\hline  
MRC~1138$-$262 &  MOIRCS & $4\arcmin \times 3\farcm5$ & $K$ & R1300 & $2.0{-}2.4$ & 11,~12 Jan. 2008 & 5 h  \\
MRC~1138$-$262 &  FORS2 & $7\arcmin \times 7\arcmin$ & -- & 300V & $0.33{-}0.9$ & 11,~12 Mar. 2008 & 5 h  \\
MRC~0943$-$242 &  FORS2 & $7\arcmin \times 7\arcmin$ & -- & 300V & $0.33{-}0.9$ & 11,~12 Mar. 2008 & 10 h  \\
MRC~0943$-$242 &  FOCAS & $6\arcmin $ diameter & L600 & 300B & $0.37{-}0.6$ & 15 Mar. 2007 & 3 h  \\
MRC~0943$-$242 &  MOIRCS & $4\arcmin \times 7\arcmin$ & OC\_HK & HK500 & $1.3{-}2.5$ & 10 Jan. 2009 & 4 h  \\
MRC~0943$-$242 &  X-SHOOTER & $1\arcsec \times 11\arcsec$ &    --  &    -- & $0.3{-}2.5$ &  5 Jun. 2009 & 1 h  \\
\hline \end{tabular}}
\smallskip
 $^a$ Exact spectral coverage for each object depends on the position of the slit on the detector. 
\end{table}