\begin{table}%t1
%\centering
\par
\caption{Observational parameters and AO performances for NACO observations of SWAN fields. 
See the text for a full description of the entries. %\\
$^a$ CONICA was fitted with a new detector in June 2004.%\\
$^b$ The noise is that measured in the resulting co-added image, scaled to 
a 1~sec integration. Its statistical properties closely follow a Gaussian 
distribution with additional weak wings.
$^c$ "$\theta_0$'' refers to the isoplanatic angle in $K_{\rm s}$ band 
as measured fitting the variation of the Strehl ratio of the point sources 
in the fields as described in the text. %\\
%The original detector had a gain of $\sim$10~$e^-$~ADU$^{-1}$; the new 
%detector has 12.1~$e^-$~ADU$^{-1}$.
\label{obspar}}
\begin{tabular}{cccccccccc} %cccccccc}
\par
\noalign{\smallskip} \hline \hline\noalign{\smallskip}
%
%\multicolumn{3}{c}{Field} &  & \multicolumn{6}{c}{Integration} & & & \multicolumn{4}{c}{NAOS$^a$} &  & \\
%
%\noalign{\smallskip} 
%\cline{1-3} \cline{5-10} \cline{13-16}  
%
 Name & RA & Dec  & Obs. & $\Delta t$ & $\sigma_{\rm image}$$^b$ & Mean & Strehl & N. of & $\theta_0$$^c$ \\
\par
 & (J2000.0) & (J2000.0) & date$^a$ & (min) & (e$^-$~s$^{-1}$) & airmass & \% & stars & (\arcsec) \\
\par
(1) & (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9) & (10)  \\
\par
\noalign{\smallskip} \hline \noalign{\smallskip}
\par
SBSF~02  & 00 44 31.88 & $-$29 52 30.3 & 07.09.04   &   54  & 0.29 & 1.08 & --  & 2 & 5.90 \\
SBSF~03  & 00 45 20.62 & $-$29 56 46.0 & 08.09.04   &   54  & 0.29 & 1.24 & --  & 2 & 11.20\\ 
SBSF~04  & 00 45 28.05 & $-$29 31 40.1 & 09.12.04   &   68  & 0.28 & 1.22 & 33  & 2 & 10.65 \\ 
SBSF~06  & 00 50 34.70 & $-$29 26 32.0 & 09.09.04   &   54  & 0.33 & 1.17 & 24  & 0 & [12.70] \\
SBSF~08  & 00 52 18.88 & $-$29 27 17.8 & 12.09.04   &   56  & 0.32 & 1.09 & 42  & 1 & 12.00 \\
SBSF~14  & 06 07 06.34 & $-$13 13 37.1 & 15.12.02   &   60  & 0.22 & 1.20 & --  & 4 & 11.95\\
SBSF~15  & 08 44 00.22 & $-$16 34 01.1 & 17.12.02   &   60  & 0.25 & 1.12 & 46  & 10 & 21.78\\
SBSF~16  & 09 14 52.77 & $-$19 26 17.0 & 18.12.02   &   50  & 0.25 & 1.07 & --  & 1 & 12.84\\
SBSF~17  & 09 47 44.79 & $-$21 37 12.7 & 20.03.03   &   44  & 0.28 & 1.05 & 35  & 2 & 10.61\\
SBSF~18  & 09 49 46.99 & $-$21 45 13.3 & 17.12.02   &   40  & 0.30 & 1.06 & --  & 7 & 21.18\\
SBSF~24  & 10 40 26.20 & $-$30 00 36.5 & 21.03.03   &   60  & 0.24 & 1.02 & 30  & 8 & 11.77\\
SBSF~27  & 12 55 37.48 & $-$31 42 41.3 & 11.04.04   &   44  & 0.30 & 1.07 & 35  & 12 & 17.85\\
SBSF~28  & 12 56 14.14 & $-$42 09 10.9 & 11.04.04   &   44  & 0.27 & 1.26 & 42  & 2 & 9.94\\
SBSF~34  & 13 46 25.24 & $-$31 45 47.5 & 11.04.04   &   44  & 0.28 & 1.36 & 28  & 2 & 4.89\\
SBSF~36  & 22 14 36.74 & $-$28 25 31.6 & 05.09.03   &   60  & 0.23 & 1.09 & 35  & 2 & 13.25\\
SBSF~37  & 22 43 04.43 & $-$39 49 29.3 & 06.09.03   &   60  & 0.23 & 1.10 & 34  & 0 & [12.70]\\
SBSF~38  & 22 47 06.77 & $-$40 10 01.3 & 05.09.03   &   60  & 0.22 & 1.04 & 31  & 2 & 10.68\\
SBSF~39  & 22 49 34.23 & $-$39 33 05.3 & 15.06.03   &   60  & 0.24 & 1.04 & 22  & 1 & 10.00\\
SBSF~40  & 22 49 49.32 & $-$39 53 15.0 & 12.06.03   &   48  & 0.34 & 1.04 & 10  & 0 & 12.70\\
SBSF~41  & 22 50 21.28 & $-$40 07 38.6 & 14.06.03   &   60  & 0.26 & 1.04 & 33  & 3 & 19.72 \\
SBSF~42  & 23 29 55.77 & $-$18 35 54.1 & 16.06.03   &   60  & 0.24 & 1.03 & 35  & 0 & [12.70] \\
\par
\noalign{\smallskip} \hline \noalign{\smallskip}
\par
\end{tabular}
\par
\end{table}