\begin{table}%t1
\caption{\label{targets}\label{tab1}Observations.}
\small
%\centerline
{
\begin{tabular}{l c c l c c l l}
\hline\hline
Instrument  & Pixel Scale  & Band & Wavelength & Bandwidth & FoV & Exp. Time$^{{a}}$ & Seeing$^{{b}}$  \\
                     & (arcsec/pix) &            &        (nm)       &      (nm)      &   (arcmin$^2$) &      (min)     & (arcsec) \\
\hline
Palomar/LFC     & $0.18$ & $B$   & $440$  & $100$ &  $588/566$ & $345$/$360$   & $\sim$$1$      \\
                --            &       --       & $z$   & $900$  & $180$ & $556/442$ & $60$/$135$   & $\sim$$1$       \\
CFHT/WIRCAM &  $0.3$  & $J$   & $1252$ & $158$ & $477/482$ & $182$/$219$  & $0.7{-}1$  \\
                 --            &      --        & $K$s & $2146$ & $325$ & $477/482$ &  $53$/$64$   & $0.7{-}1$  \\
{\it Spitzer}/IRAC & $0.61$ & IRAC1 & $3560$ & $750$ & $42/42$ & $2$/$2$ & $1.66$ \\
                  --            &      --       & IRAC2 & $4520$ & $1010$ & $42/42$ & $2$/$2$ & $1.72$ \\
                  --            &       --       & IRAC3 & $5730$ & $1420$ & $42/42$ & $2$/$2$ & $1.88$  \\
                  --            &       --       & IRAC4 & $7910$ & $2930$ & $42/42$ & $2$/$2$ & $1.98$  \\
\hline     
\end{tabular}}            
\smallskip
$^{{a}}$ FoV and exposure time for 7C~1751+6809 and 7C~1756+6520 respectively.\\
$^{{b}}$ Values of the mean {\it FWHM} for {\it Spitzer}/IRAC four bands.
\end{table}