\begin{table}%t1
\caption{\label{t:logobs}Log of FLAMES observations.}
\par
%\centering
\par
\begin{tabular}{rrcrr}
\hline \hline \noalign{\smallskip}
Date        &   UT       &Exp.time& Grating & Airmass \\
            &            &(s)   &         &        \\
\hline
Aug. 09 2009 &01:12:12.226 &4500 & HR13-conf.2&1.047 \\
Aug. 22 2009 &02:50:54.190 &4500 & HR13-conf.2&1.051 \\
Aug. 22 2009 &04:10:34.251 &4500 & HR13-conf.2&1.220 \\
Aug. 24 2009 &03:01:43.118 &4500 & HR13-conf.2&1.078 \\
Aug. 24 2009 &04:17:55.094 &4500 & HR13-conf.2&1.274 \\
Sep. 01 2009 &01:41:29.506 &4500 & HR13-conf.2&1.022 \\
Sep. 02 2009 &02:34:33.264 &4500 & HR13-conf.2&1.091 \\
Sep. 15 2009 &03:26:55.988 &4500 & HR13-conf.2&1.437 \\
Sep. 16 2009 &02:47:56.318 &4500 & HR13-conf.2&1.275 \\
Aug. 02 2009 &01:36:28.222 &4725 & HR11-conf.2&1.051 \\
Aug. 03 2009 &00:38:24.210 &4725 & HR11-conf.2&1.149 \\
Aug. 07 2009 &23:28:33.633 &4725 & HR11-conf.2&1.311 \\
Aug. 08 2009 &23:40:29.190 &4725 & HR11-conf.2&1.250 \\
Aug. 10 2009 &00:26:29.840 &4725 & HR11-conf.2&1.114 \\
Aug. 10 2009 &01:47:44.668 &4725 & HR11-conf.2&1.014 \\
Aug. 20 2009 &00:42:47.197 &4725 & HR11-conf.2&1.033 \\
Aug. 20 2009 &02:03:48.847 &4725 & HR11-conf.2&1.009 \\
Aug. 20 2009 &03:33:26.476 &4725 & HR11-conf.2&1.106 \\
Sep. 16 2009 &01:16:06.755 &4725 & HR11-conf.2&1.056 \\
Jun. 07 2009 &05:13:25.230 &4500 & HR13-conf.1&1.055 \\
Sep. 19 2009 &01:41:56.426 &4500 & HR13-conf.1&1.119 \\
\hline
\end{tabular}
\end{table}