\begin{table}%t1
\caption{\label{tab:setup}Summary of the observing log and instrumental set up.}
%\centerline
{\small
\par
\begin{tabular}{l c c }
\hline\hline
Parameter           &   Run 1                 &    Run 2           \\
                    &   13--14 Apr. 2007       &    8--9 May 2008   \\
\hline
Exp. time on galaxy &   $16\times 30$ min     &  $11\times 30$ min  \\
Exp. time on sky    &   $6\times 30$ min      &  $4\times 10$ min   \\
Mean Seeing         &   $\sim $$2''$          &     $\sim $$2''$       \\
RA slit center    &   12:59:51              &  13:00:08           \\
Dec slit center    &  +27:58:01              & +27:58:37           \\
Slit PA           &  $81^\circ7$            & $-8^\circ3$          \\
Slit length         &  300 arcsec             & 300 arcsec          \\
Slit width          &  0.8  arcsec            &  1.0 arcsec         \\
CCDs                & MIT  2.2~K $\times$ 4~K   & MIT  2.2~K $\times$ 4~K\\ 
Gain                & 2.1 e$^-$/ADU &2.1 e$^-$/ADU \\
R.O.N.              & 4 e$^-$ rms             &4 e$^-$ rms           \\
Pixel size          & 15 $\mu$m               &15 $\mu$m             \\
Pixel binning       & $3\times1$              &$3\times1$            \\
Pixel scale         & 0\farcs104 pixel$^{-1}$ ($\times 3$) &0\farcs104 pixel$^{-1}$ ($\times 3$) \\
Grism               & VPH 450                 & VPH 520               \\
Filter              & L600                    & L600                 \\
Dispersion          &  0.394 \AA\ pixel$^{-1}$ ($\times 1$)&0.400 \AA\ pixel$^{-1}$ ($\times 1$)\\
Observed range      & 4200--5700 \AA        &4450--6050  \AA     \\
Calibrated range    & 4545--5665 \AA        &4700--5900  \AA     \\
Calibration lamp    & Th + Ar                 &Th + Ar               \\
Instrumental $\sigma^{(*)}$& 76~\kms\  & 96 ~\kms\ \\
\hline
\end{tabular}}
\tablefoot{$^{(*)}$ Computed at 5100 \AA.}
\end{table}