\begin{table}%t5
      \caption{\label{table.spacemissions}Energy bands, spatial resolutions, and field of view of some
      X-ray instruments onboard space missions\tablefootmark{a}.}   
  %%\centerline
\par
{\small
  \begin{tabular}{ll ccc}
            \hline
            \hline
            \noalign{\smallskip}
Space 		& Instrument	& Energy	& Resolution	& FoV	\\
mission		& 		& [keV]		& [arcsec]	& [arcmin]\\
            \noalign{\smallskip}
            \hline
            \noalign{\smallskip}
{\em Einstein} 	& HRI		& 0.2--3.0	& 4		& 25	\\
	 	& IPC		& 0.3--3.5	& 60		& 75	\\
{\em ROSAT} 	& HRI		& 0.1--2.4	& 5		& 20~$\times$~20\\
	 	& PSPC		& 0.1--2.4	& 15		& 114	\\
{\em Chandra} 	& HRC-I		& 0.08--10	& 0.4		& 31~$\times$~31\\
	 	& ACIS-S	& 0.2--10	& 1.2		& 16~$\times$~16\\
{\em XMM-Newton}& PN		& 0.2--15	& 6		& 30 	\\
		& MOS		& 0.2--12	& 6		& 30	\\
            \hline
         \end{tabular}} 
\tablefoot{\tablefoottext{a}{See an exhaustive compilation of parameters of X-ray detectors at 
{\tt http://space.mit.edu/$\sim$jonathan/xray\_detect.html}.}}
   \end{table}