Table 5: Log of the photometric observations.
Observing date Start Exposure $\Delta t$ Telescope Instrument Filter Reference
  MJD time (s) (h)        
1998 Jan. 22 50 835.929 1 $\times$ 1800 <1 IAC-80 CCD I Béjar et al. (2004)
1998 Jan. 22 50 835.983 1 $\times$ 1800 <1 IAC-80 CCD R Béjar et al. (2004)
1999 Jan. 22 51 201.047 1 $\times$ 720 <1 TCS CAIN-2 J this paper
1999 Jan. 24 51 202.870 1 $\times$ 720 <1 TCS CAIN-2 J Béjar et al. (2004)
2000 Dec. 30 51 909.075 5 $\times$ 1500 1.4 INT WFC I Caballero et al. (2004)
2000 Dec. 31 51 909.901 10 $\times$ 1500 4.7 INT WFC I Caballero et al. (2004)
2001 Jan. 01 51 911.055 6 $\times$ 1500 5.2 INT WFC I Caballero et al. (2004)
2001 Dec. 10 52 254.295 1 $\times$ 1920 <1 Antu ISAAC J Caballero et al. (2005)
2003 Jan 12 52 647.414 12 $\times$ 1200 4.2 INT WFC I Caballero et al. (2004)
2003 Oct. 19 52 932.023 1 $\times$ 3600 <1 3.5 m CA O2K H Caballero et al. (2005)
2003 Oct. 22 52 935.201 1 $\times$ 600 <1 3.5 m CA O2K H Caballero et al. (2005)
2003 Dec. 22 52 995.596 3 $\times$ 600 <1 TCS CAIN-2 J this paper
2003 Dec. 22 52 996.086 1 $\times$ 1200 <1 TCS CAIN-2 H this paper
2003 Dec. 26 53 000.092 3 $\times$ 120 <1 IAC-80 CCD I this paper
2003 Dec. 28 53 002.080 6 $\times$ 600 $\sim$1 IAC-80 CCD I this paper
2004 Jan. 11 53 016.116 10$\times$ 300 $\sim$1 OGS ESACCD Wa this paper
2004 Jan. 14 53 019.061 20 $\times$ 300 1.9 OGS ESACCD Wa this paper
2004 Jan. 24 53 028.859 13 $\times$ 600 2.2 IAC-80 CCD I this paper
2004 Jan. 25 53 029.843 14 $\times$ 600 2.7 IAC-80 CCD I this paper
2004 Jan. 30 53 034.879 3 $\times$ 1200 <1 IAC-80 CCD I this paper
2004 Jan. 30 53 034.854 46 $\times$ 300 4.0 OGS ESACCD Wa this paper
2004 Jan. 31 53 035.887 30 $\times$ 300 2.7 OGS ESACCD Wa this paper
2004 Feb. 1 53 036.833 45 $\times$ 300 6.3 OGS ESACCD Wa this paper
2004 Feb. 2 53 037.875 26 $\times$ 300 4.6 OGS ESACCD Wa this paper
2004 Feb. 3 53 038.948 6 $\times$ 600 $\sim$1 IAC-80 CCD I this paper
$\textstyle \parbox{14.5cm}{ $^{{a}}$\space $W$ : optical images taken with no filter.}$

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