TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1337 SUBJECT: GRB020405: VLT optical observations DATE: 02/04/07 21:12:03 GMT FROM: Stefano Covino at Brera Astronomical Observatory S. Covino, G. Ghisellini, P. Saracco, G. Tagliaferri, F. Zerbi (Observ. of Brera, Milan, Italy); S. Di Serego, A. Cimatti, Della Valle (Observ. of Arcetri, Florence, Italy); F. Fiore, G.L. Israel, L. Stella (Observ. of Monte Porzio, Rome, Italy); M. Vietri (Univ. Rome 3, I); N. Kawai (RICHEN, Japan); D. Lazzati (IoA, Cambridge, UK); S. Ortolani (Univ. of Padua, Italy); L. Pasquini (ESO, Germany); G. Ricker (MIT, USA); E. Le Floch, P. Goldoni, F. Mirabel (CEA, F), H. Boehnhardt (on behalf of the Melipal team, ESO, Paranal, Chile) report: On 2002 April 7.14 we observed the optical counterpart of GRB 020405 reported by Price et al. (GCN 1326). The observations were performed with the ESO VLT-3 (Melipal) telescope equipped with FORS1 with a V filter in the imaging polarimetry mode. The transient source is clearly detected and the acquisition image allowed to derive the Bessel V magnitude of the transient, V=21.45 +/- 0.1, assuming V=18.5 and V=17.6 for the comparison USNO-A2.0 stars 0525-16813005 and 0525-16815468, respectively, as reported in Palazzi et al. (GCN 1328). This message is citeable.