TITLE: GCN GRB OBSERVATION REPORT NUMBER: 828 SUBJECT: GRB000911: VLT infrared observation DATE: 00/10/03 18:07:59 GMT FROM: Davide Lazzati at Osservatorio Astronomico di Brera S. Covino, P. Saracco, D. Lazzati, D. Fugazza and G. Ghisellini (Oss. Astr. Brera) report: "Starting on Sept 28.1778 for a total observation time of ~1 hour we have obtained a J band observation of the radio/optical candidate of GRB000911 (Berger et al., GCN 795; Price et al., GCN 796; see also GCN 798 and 799), using the ISAAC instrument at the VLT-UT1. We measure: Date 2000 UT Exp.(s) Filter Magnitude Sept 28.2 2400 J 22.38 +/- 0.08 The photometry has been performed relative to the UKIRT standard star FS28 (see ISAAC user manual for reference). BVRIJ 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."