\begin{table}%t1
\caption{\label{obslog}Account of our observations.}
\small%\centerline
 {
  \begin{tabular}{l c c c c c  }
  \hline \hline
  \noalign{\smallskip}
    Star$^a$ & RA (J2000) & Dec (J2000) &  $H$ & $t^b_{\rm integration}$ & $S/N$ \\
       & & & &  [s] & \\
  \hline
 {B3-b1} &  18 ~08 ~15.8 & --25 ~42 ~10 &11.3  & 2400 & 60 \\
 {B3-b7} & 18 ~09 ~ 16.9 & --25~ 49 ~28 & 11.6 & 4200 &  40\\
 {B3-b8} & 18 ~08 ~ 24.6 & --25~ 48 ~44 & 11.9 & 3840 &  90\\
 {BW-b6} & 18 ~04 ~45.1 & --29 ~48 ~52 & 11.9 & 3840 & 60 \\
 {BW-f6} & 18 ~04 ~56.1 & --29 ~48 ~59 & 12.0 & 4800 & 90 \\
 {B6-f1} & 18 ~10 ~04.5 & --31 ~41 ~45 & 11.9 & 1920 &50 \\
 {B6-b8} &18 ~09 ~55.9 & --31 ~45 ~46 & 11.9 & 3840 & 60\\
 {B6-f7} & 18 ~03 ~52.3 & --31 ~46 ~42 & 11.9 & 1920 &50\\
 {Arp~4203} &  18 ~03~ 23.6 &  --30 ~01~ 59  & 9.2  & 200  & 80\\
 {Arp~4329} & 18 ~03~ 28.4  & --29 ~58 ~42 & 11.1 & 1800  & 95\\
 {Arp~1322} &  18 ~03 ~49.4 & --30 ~01 ~54   & 10.3 & 600   & 110 \\
  \hline
\end{tabular}}
\medskip
$^{a}$~The designation of the stars is adopted from \cite{lecureur};  
$^{b}$~the total integration times are given by NDIT~$\times$ DIT~$\times$ NEXP~$\times$ NABCYCLES~$\times$~2, see the CRIRES User's manual at \protect\url{http://www.eso.org/sci/facilities/paranal/instruments/crires/doc/}
\end{table}