GCN Circular 822
D. Lazzati, S. Covino, D. Fugazza, G. Ghisellini (Oss. Astr. Brera) report: "We have obtained Bessel B, V, R and I band observations, using the FORS1 instrument at the VLT-UT1: The radio/optical candidate (Berger et al., GCN 795; Price et al., GCN 796; see also GCN 798 and 799) is clearly detected in all our images with the following magnitudes: Date 2000 UT Exp.(s) Filter Magnitude Sept 28.224 2600 B 24.9 +/- 0.1 Sept 28.255 1500 V 24.6 +/- 0.1 Sept 28.273 900 R 24.23 +/- 0.15 Sept 28.284 1500 I 23.6 +/- 0.15 The photometry (still to be considered preliminar) has been performed relative to the stars reported by Henden (GCN 800). Comparison of the measured R and I magnitudes with the measurements reported by Price et al. (GCN 796) and Pedersen et al. (GCN 815) give a time decay index: delta_R=1.5 +/- 0.14 delta_I=1.6 +/- 0.35 fully consistent with each other. BVRI spectrum, images and fit informations can be found at http://www.merate.mi.astro.it/~lazzati/GRB000911/ We thank the ESO VLT-UT1 service observing team. This message is citable."