GCN Circular 13631
U.Quadri, L.Strabla and R.Girelli, A.Quadri report: We imaged the field of GRB 120811C detected by SWIFT(trigger 530689) with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory, Italy. The observations started 266min. after the GRB trigger,with our schmidt telescope D=320 mm F/D=3.1. Weather conditions were good. We co-added a series of 30 exposures. We did not found any optical counterpart in the error box of the XRTcandidate (Barlow et al. GCNC 13622). Start End Vlim 266min 326min 19.2 Magnitudes were estimated with the UCAC-3 The message may be cited.