\begin{table}%t1 \caption{\label{laica_log}Observing log for the LAICA imaging observations of L1641.} %\centering \small \begin{tabular}{lccccc} \hline\hline & Pointing center & Observation date & Airmass & Exposure times & \\ Fields & (J2000) & (UT) & ($g'/r'/i'/z'$) & (second) & Calibartion fields \\ \hline L1641-1 & 05 39 17.29 $-$07 12 41.7&2007-12-15 21:52:15--22:37:36&1.6/1.6/1.6/1.7&1, 45, 300&SA98\\ L1641-2 & 05 40 18.76 $-$07 28 03.5&2007-12-15 22:40:01--23:24:01&1.4/1.5/1.5/1.5&1, 45, 300&SA98\\ L1641-3 & 05 41 20.10 $-$07 43 26.3&2007-12-15 23:27:25--00:12:01&1.4/1.4/1.4/1.4&1, 45, 300&SA98\\ L1641-4 & 05 42 21.46 $-$07 58 48.9&2007-12-16 00:13:57--00:57:30&1.4/1.4/1.4/1.4&1, 45, 300&SA98\\ L1641-5 & 05 43 22.91 $-$08 14 10.5&2007-12-16 00:59:17--01:43:11&1.5/1.5/1.5/1.5&1, 45, 300&SA98\\ L1641-6 & 05 44 24.25 $-$08 29 33.3&2007-12-16 01:45:51--02:29:56&1.7/1.7/1.6/1.6&1, 45, 300&SA98\\ L1641-7 & 05 40 18.20 $-$07 43 35.7&2008-03-11 20:07:04--20:54:23&1.6/1.7/1.7/1.8&1, 45, 300&SA98\\ L1641-8 & 05 41 19.55 $-$07 58 58.6&2008-03-11 20:58:16--21:41:39&2.0/2.0/2.2/1.8&1, 45, 300&SA98\\ L1641-9 & 05 42 20.89 $-$08 14 20.5&2008-03-12 20:19:18--20:34:37&1.6/1.6/1.6/1.7&1, 45, 300&SA95,SA98\\ L1641-10& 05 43 22.35 $-$08 29 43.5&2008-03-12 20:47:01--21:26:38&1.8/1.9/2.0/2.1&1, 45, 300&SA95,SA98\\ \hline \end{tabular} \end{table}