TITLE: GCN CIRCULAR NUMBER: 13151 SUBJECT: GRB 120328A: TAROT La Silla observatory optical observations DATE: 12/03/28 05:19:00 GMT FROM: Alain Klotz at CESR-CNRS Klotz A. (IRAP-CNRS-OMP), Gendre B. (ASDC/INAF-OAR), Boer M. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report: We imaged the field of GRB 120328A detected by SWIFT (trigger 518792) with the TAROT robotic telescope (D=25cm) located at the European Southern Observatory, La Silla observatory, Chile. The observations started 345.7s after the GRB trigger. The elevation of the field increased from 26 degrees above horizon and weather conditions were good. Images are unfiltered. We do not detect any OT with a limiting magnitude of: t0+345.7s to t0+405.7s : R > 18.5 Magnitudes were estimated with the nearby NOMAD1 stars and are not corrected for galactic dust extinction. N.B. Galactic coordinates are lon=339.0212 lat= +9.5155 and the galactic extinction in R band is ~2 magnitudes estimated from D. Schlegel et al. 1998ApJ...500..525S.