\begin{table}%t1 \caption{\label{m67tab1}Summary of the observations of M~67.} %%\centerline \begin{tabular}{cccccc} \hline\hline Run & UT date & JD$^*$ & Telescope & Filter & $N_{\rm{Obs}}$ \\ \hline 1&2005 February 23 & 425.36-425.50& RTT150&$R_{\rm c}$& 270 \\ 2 &2005 February 24 & 426.26-426.58 & RTT150 & $R_{\rm c}$& 464\\ 3 & 2005 April 28 & 489.26-429.40 & RTT150 & $R_{\rm c}$ & 205\\ 4 &2005 November 7 & 482.36-482.66&RTT150 &$R_{\rm c}$ &166 \\ 5 &2005 November 8 & 683.50-683.66&RTT150&$R_{\rm c}$ &284 \\ 6 & 2006 January 7 & 743.57-743.71 &Mercator &$VRI$& 288 \\ 7 &2006 January14 & 750.56-750.80 &Mercator &$VRI$ & 504 \\ 8 & 2006 January 19 & 755.42-755.49 &Mercator &$VRI$ &102\\ 9& 2006 April 29 & 855.39-855.47& Mercator &$VRI$ & 18 \\ 10 & 2006 May 3 & 859.40-859.46 &Mercator &$VRI$ & 123 \\ 11 & 2006 May 4 & 860.39-860.47 &Mercator &$VRI$ & 143 \\ 12 & 2006 May 5 & 861.39-861.47 &Mercator &$VRI$ & 147 \\ 13 & 2006 May 6 & 862.40-862.51 &Mercator &$VRI$ & 123 \\ 14 & 2006 May 7 & 863.39-863.47 &Mercator &$VRI$ & 147 \\ 15 & 2006 May 8 & 864.41-864.47 &Mercator &$VRI$ & 69 \\ 16 & 2006 May 9 & 865.40-865.47 &Mercator &$VRI$ & 69 \\ 17 & 2006 May 10 & 866.39-866.46 &Mercator &$VRI$ & 72 \\ 18 & 2006 May 11 & 867.40-867.46 &Mercator &$VRI$ & 63 \\ 19 & 2006 May 12 & 868.39-868.45 &Mercator &$VRI$ & 66 \\ 20 & 2006 May 13 & 869.41-869.45 &Mercator &$VRI$ & 54 \\ 21 & 2006 May 14 & 870.41-870.46 &Mercator &$VRI$ & 18 \\ 22 & 2006 May 15 & 871.43-871.44 &Mercator &$VRI$ & 6 \\ 23 & 2006 May 16 & 872.40-872.44 &Mercator &$VRI$ & 45 \\ 24 & 2006 May 17 & 873.40-873.43 &Mercator &$VRI$ & 27 \\ 25 & 2006 May 19 & 875.40-874.44 &Mercator &$VRI$ & 33 \\ 26 & 2006 May 20 & 876.41-876.43 &Mercator &$VRI$ & 24 \\ 27 & 2006 May 21 & 877.40-877.43 &Mercator &$VRI$ & 30 \\ 28 & 2006 May 23 & 879.40-879.41 &Mercator &$VRI$ & 36 \\ \hline \end{tabular} \medskip JD$^*$ lists JD~start+2~453~000. \end{table}