Table 2: Imaging observations.
UT   date Magnitude a Filter Exptime Seeing Tel./Instr.b
(2003)     (min) ( $^{\prime\prime}$)    
Mar. 24.302 $20.39 \pm 0.06$ B 12 2.4 USNO 1 m
Mar. 24.310 $19.68 \pm 0.05$ V 8 2.5 USNO 1 m
Mar. 24.316 $18.75 \pm 0.03$ R 8 2.6 USNO 1 m
Mar. 24.323 $18.20 \pm 0.04$ I 8 2.4 USNO 1 m
Mar. 24.992 $20.64 \pm 0.26$ R 8.33 1.1 CAHA 2.2 m
Mar. 25.027 $20.56 \pm 0.08$ R 54 2.0 Danish
Mar. 25.030 $21.44 \pm 0.03$ V 1 1.1 FORS2
Mar. 25.033 $21.45 \pm 0.03$ V 1 1.0 FORS2
Mar. 25.091 $22.29 \pm 0.04$ B 1 0.9 FORS2
Mar. 25.092 $21.42 \pm 0.02$ V 1 0.8 FORS2
Mar. 25.094 $20.51 \pm 0.02$ R 1 0.8 FORS2
Mar. 25.095 $20.02 \pm 0.02$ I 1 0.8 FORS2
Mar. 25.099 $20.04 \pm 0.10$ I 15 2.0 Danish
Mar. 25.129 $20.57 \pm 0.03$ R 25 2.0 Danish
Mar. 25.150 $21.55 \pm 0.12$ V 15 1.8 Danish
Mar. 25.250 $20.83 \pm 0.13$ R 130 3.0 SARA
Mar. 26.023 $22.17 \pm 0.08$ V 25 1.2 Danish
Mar. 26.041 $21.27 \pm 0.05$ R 25 1.0 Danish
Mar. 26.064 $20.82 \pm 0.08$ I 25 1.0 Danish
Mar. 26.107 $19.86 \pm 0.04$ J 6 0.7 NACO
Mar. 26.120 $17.93 \pm 0.07$ K 2.25 0.7 NACO
Mar. 26.162 $22.12 \pm 0.02$ V 1 0.6 FORS2
Mar. 26.164 $22.09 \pm 0.03$ V 1 0.6 FORS2
Mar. 26.257 $22.22 \pm 0.03$ V 1 0.7 FORS2
Mar. 26.259 $22.18 \pm 0.04$ V 1 0.8 FORS2
Mar. 26.267 $21.50 \pm 0.07$ R 160 2.2 USNO 1 m
Mar. 26.306 $18.13 \pm 0.18$ K 3.35 0.5 UKIRT
Mar. 26.351 $22.32 \pm 0.04$ V 3 0.8 FORS2
Mar. 26.351 $19.38 \pm 0.05$ H 3.35 0.6 UKIRT
Mar. 26.353 $21.43 \pm 0.02$ R 3 0.8 FORS2
Mar. 26.356 $20.90 \pm 0.03$ I 3 0.8 FORS2
Mar. 26.379 $20.09 \pm 0.03$ J 3.35 0.7 UKIRT
Mar. 27.041 $22.01 \pm 0.14$ R 30 1.0 Danish
Mar. 27.156 $22.94 \pm 0.09$ V 24 0.7 Gemini S
Mar. 27.176 $22.15 \pm 0.15$ R 22.5 0.6 Gemini S
Mar. 27.196 $21.57 \pm 0.09$ I 22.5 0.6 Gemini S
Mar. 28.159 $22.36 \pm 0.09$ R 36 1.2 Danish
Mar. 28.398 $19.06 \pm 0.20$ K 7 0.5 UKIRT
Mar. 28.455 $20.34 \pm 0.08$ H 7 0.7 UKIRT
Apr. 3.282 $24.30 \pm 0.13$ R 88 1.3 Gemini S
Jul. 5.979 >25.0  (3$\sigma $) I 15 0.7 FORS2
Jul. 5.993 >25.6  (3$\sigma $) R 15 0.8 FORS2
Jul. 20.958 $28.0 \pm 0.3$ V 32   HST
a The magnitudes have not been corrected for Galactic extinction, and the errors do not include the uncertainty in the absolute calibration (see text).
b Combinations of telescopes and instruments: USNO Flagstaff Station 1.0 m with $\rm 2k\times 2k$ Tek CCD, 0 $\hbox{$.\!\!^{\prime\prime}$ }$68/pixel; Calar Alto 2.2 m and CAFOS with $\rm 1k\times 1k$ SITe CCD, 0 $\hbox{$.\!\!^{\prime\prime}$ }$29/pixel; ESO/Danish 1.54 m and DFOSC with $\rm 2k\times4k$ EEV CCD, binned to 0 $\hbox{$.\!\!^{\prime\prime}$ }$78/pixel; Yepun and FORS2 with two MIT CCDs of $\rm 4k\times2k$, binned to 0 $\hbox{$.\!\!^{\prime\prime}$ }$25/pixel; Yepun and NACO with the Aladdin InSb $\rm 1k\times 1k$ detector and S54 camera, 0 $\hbox{$.\!\!^{\prime\prime}$ }$054/pixel; SARA 0.9 m and Apogee Ap7 CCD camera with $512\times512$ array, 0 $\hbox{$.\!\!^{\prime\prime}$ }$7/pixel; UKIRT and UFTI with a $\rm 1k\times 1k$ HgCdTe array, 0 $\hbox{$.\!\!^{\prime\prime}$ }$091/pixel; Gemini South and acquisition camera with $\rm 1K\times 1K$ EEV CCD, binned to 0 $\hbox{$.\!\!^{\prime\prime}$ }$23/pixel; HST/ACS and WFC detector with two $\rm 2k\times4k$ SITe CCDs, 0 $\hbox{$.\!\!^{\prime\prime}$ }$05/pixel.


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