\begin{table}%t1 
\caption{\label{tab:observations}Summary of the different imaging data used for this analysis.}
\small%\centerline
 {
\begin{tabular}{c  c  c  c  c}
\hline\hline
    Camera & Band& Date &Exp. [s] & Limit [mag]\\
\hline
\multirow{5}{*}{Suprime}&$B$&2004-02-19 &4320 &27.3 \\
&$V$& 2004-02-18&3240 & 26.6\\
&$r+$&2004-01-19 & 2160& 26.8\\
&$i+$&2004-01-22 &2880 & 26.2\\
&$z+$&2004-01-21 &4320 & 25.2\\
\hline
&&&& \\[-8pt]
Megacam &$u\star$ & 2004-2005$^{(a)}$& $\sim$40~000 &26.4\\
\hline
&&&& \\[-8pt]
ACS &{\it F814w} &2004-04-08 & 2028&27.1$^{(b)}$ \\
 \hline
WFPC2 & {\it F606W} &2008-01-07 & 1200& 26.5\\
\hline
\end{tabular}}
\medskip
The magnitude limits for the COSMOS observations are those shown in \cite{capak07} for the ground-based observations and in \cite{koekemoer07} for the HST observations. (a)~The $u^\star$~frame was created by combining observations taken between the years~2004 and~2005, thus, the total exposure time of the COSMOS field in this band varies. (b)~27.1 is the magnitude limit for a point-like object in the ACS~exposure and increases in brightness to~26.1 for a~1\arcsec-wide extended object.
\end{table}