\begin{table}%t2 
\par
\caption{\label{INTEGRAL-bundles}Characteristics of the INTEGRAL fiber bundles.}  
\small%\centerline
{
\begin{tabular}{lcccc}  
\hline 
\hline
\noalign{\smallskip}
Bundle & Fiber core ($\oslash$)$^a$ & \# Fibers$^b$ & FoV$^c$ & Sky-ring$^d$\\
\hline
SB1 & 0.45 & 205(175+30) &$7.80 \times 6.40$& 90\\
SB2 & 0.90 & 219(189+30) &$16.0 \times 12.3$& 90 \\
SB3 & 2.70 & 135(115+20) &$33.6 \times 29.4$& 90 \\
\hline                                   
\end{tabular}}
\smallskip
$^a$ {Fiber \textit{core} diameter (arcsec).} \\
$^b$ {Total number of fibers (rectangle+sky ring).}\\
$^c$ {Spatial coverage of the central rectangle in arcsec.}\\
$^d$ {Diameter of the external sky ring in arcsec.} 
\end{table}