TITLE: GCN CIRCULAR NUMBER: 14559 SUBJECT: GRB 130504A: Bassano Bresciano Observatory optical upper limit DATE: 13/05/04 17:23:59 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla, R.Girelli and A.Quadri report: We imaged the field of GRB 130504A detected by SWIFT(trigger 555096) with the robotic telescopes of (IAU station 565) Bassano Bresciano Observatory, Italy. The observations started automatically 2 min 42 sec after the GRB trigger, with our schmidt telescope D=400 mm F/D=3 and our Newton telescope D=250mm F/D=5.5. Weather conditions were good. We co-added 2 series of 10 unfiltered CCD exposures of 120s each. We did not found any optical counterpart in the error box of the XRTcandidate (Cummings et al. GCN 14551) and in error box of X-ray afterglow candidate (P. D'Avanzo (INAF-OAB), A. Melandri (INAF-OAB) et al. GCN 14553) at our following limiting magnitude: . Start End Vlim 2.7min 52min 18.0 Magnitudes were estimated with the USNO-B1 cat. and are not corrected for galactic dust extinction. The message may be cited.