\begin{table}%t1
\caption{Current and future 8~m class telescopes and MOS instruments.}
\label{teltable}      % is used to refer this table in the text
%\centering
                          % used for centering table
\begin{tabular}{l l c c}        % centered columns (4 columns)
\hline\hline                 % inserts double horizontal lines
Telescope & Instrument & Spectral range (\AA) & ADC \\    % table heading 
\hline                        % inserts single horizontal line
Keck     & DEIMOS & 4100--11~000 & no \\
Keck     & LRIS   & 3100--10~000 & planned \\
Subaru   & FOCAS  & 3650--9000  & yes \\
Gemini   & GMOS   & 3600--11~000 & yes \\
LBT      & MODS   & 3300--11~000 & yes \\
HET      & LRS    & 4150--9100  & yes \\
SALT     & PFIS   & 3200--8500  & yes \\
GTC      & OSIRIS & 3650--10~000 & evaluating \\
VLT      & FORS   & 3300--11~000 & yes \\
VLT      & VIMOS  & 3300--11~000 & no \\
\hline                                   
\end{tabular}
\end{table}