\begin{table}%t1
\caption{\label{tab1}Journal of observations carried out from October 2007 to February 2009.}
%\centerline
{\small
\begin{tabular}{l c c c c c c} 
\hline \hline
Observatory & Location & Telescope(m) & Filters & Nights & Hours \\ \hline
SPM & San\ Pedro \ M\'artir (M\'exico)&  0.84 	  &   \it{Vby}	&  22	&  97.8\tablefootmark{a} \\	
Cal &	Carona (Switzerland)         &  0.14/0.30 &      no	&  14   &  81.1 \\
PiM & 	Pic\  du\  Midi (France)     &  0.60      & 	$V$	&   6 	&  34.9	\\
O3k &  Treize-Septiers (France)     &  0.20      &	no	&   6	&  19.5\tablefootmark{b} \\
Ond &  Ondrejov (Czech Republic)     &  0.65      &	$R$	&   6	&  14.9 \\
Gil &  Gilman (USA)	             &  0.30 	  &	$V$	&   2	&   4.8 \\
Mar &	Blacksburg (USA)	     &  0.35      &	$V$	&   2	&   4.4 \\
Gras&	Mayhill (USA)	             &  0.30	  &     $R$	&   1	&   2.2 \\
Ves &	Vesqueville (Belgium)	     &  0.20	  &	V	&   1	&   1.9 \\
\hline
\end{tabular}}
\tablefoot{Observatory code: Cal = Calina Observatory; Gil = Gilman 
Observatory; 
Gras = Global Rent-a-Scope Observatory; Mar = Martin Observatory; O3k = 
Observatoire des trois korrigans; Ond = Ondrejov Observatory; 
PiM = Observatoire du Pic du Midi; SPM = 
San Pedro M\'artir Observatory; Ves = Vesqueville Observatory.
\tablefoottext{a}{Str\"omgren $b$ and $y$ filters were used during one night.}
\tablefoottext{b}{$V$ filter was using during 2~h.}}\vspace*{-2mm}
\end{table}