\begin{table}%t2 \caption{\label{vimos_log}Observing log for the VIMOS optical spectroscopy.} %\centering \small \begin{tabular}{rcccc} \hline\hline & Pointing center & Data/time of observations & Integration time & \\ Fields & (J2000) & (UT)& (second) & Airmass \\ \hline L1630-1 BLUE& 05 46 57.08 $+$00 23 34.4&2007-02-11 01:14:15/01:40:37/02:07:10&3 $\times$ 1526&1.1/1.1/1.1\\ RED& 05 46 57.08 $+$00 23 34.2&2007-02-09 02:13:46/02:40:08/03:06:40&3 $\times$ 1526&1.1/1.2/1.3\\ L1630-2 BLUE& 05 46 11.01 $+$00 08 33.3&2007-02-19 01:07:22/01:33:44/02:00:16&3 $\times$ 1526&1.1/1.1/1.2\\ RED& 05 46 11.00 $+$00 08 33.0&2007-02-18 01:19:07/01:45:29/02:12:00&3 $\times$ 1526&1.1/1.2/1.2\\ L1630-3 BLUE& 05 46 04.81 $-$00 06 54.8&2007-02-20 00:54:26/01:20:48/01:47:19&3 $\times$ 1526&1.1/1.1/1.2\\ RED& 05 46 04.80 $-$00 06 54.8&2007-02-21 00:52:21/01:18:42/01:45:13&3 $\times$ 1526&1.1/1.1/1.2\\ L1641-1 BLUE& 05 35 50.41 $-$06 20 43.3&2007-01-28 01:35:00/02:01:22/02:27:54&3 $\times$ 1526&1.0/1.1/1.1\\ RED& 05 35 50.41 $-$06 20 43.3&2007-01-28 03:08:50/03:35:12/04:01:46&3 $\times$ 1526&1.1/1.2/1.2\\ L1641-2 BLUE& 05 36 19.38 $-$06 46 15.1&2006-12-22 04:53:29/05:16:31/05:39:44&3 $\times$ 1326&1.1/1.1/1.1\\ RED& 05 36 19.38 $-$06 46 15.2&2006-12-21 04:33:45/04:56:47/05:20:01&3 $\times$ 1327&1.1/1.1/1.1\\ L1641-3 BLUE&05 38 25.92 $-$06 59 43.2&2007-02-17 00:58:59/01:25:21/01:51:51&3 $\times$ 1526&1.1/1.1/1.1\\ RED& 05 38 25.92 $-$06 59 43.2&2007-02-15 01:11:09/01:37:31/02:04:01&3 $\times$ 1526&1.1/1.1/1.1\\ L1641-4 BLUE& 05 42 01.92 $-$08 04 49.0&2007-02-22 01:30:08/01:56:30/02:23:01&3 $\times$ 1526&1.1/1.1/1.2\\ RED& 05 42 01.94 $-$08 04 49.4&2007-03-12 00:56:23/01:22:45/01:49:16&3 $\times$ 1526&1.2/1.2/1.3\\ L1641-5 BLUE& 05 40 51.60 $-$07 51 01.4&2007-01-25 01:54:00/02:20:21/02:46:55&3 $\times$ 1526&1.0/1.0/1.1\\ RED& 05 40 51.60 $-$07 51 02.0&2007-01-27 01:16:57/01:43:19/02:09:49&3 $\times$ 1526&1.1/1.0/1.0\\ \hline \end{tabular} \end{table}