TITLE: GCN CIRCULAR NUMBER: 15035 SUBJECT: GRB 130725A - Faulkes Telescope South Observations DATE: 13/07/26 08:43:47 GMT FROM: Andrea Melandri at Liverpool John Moores U F.J. Virgili (LJMU), C. Guidorzi (U. Ferrara), J. Japelj, D. Kopac (U. Ljubljana), A. Melandri (INAF-OAB) report: "The 2-m Faulkes Telescope South robotically followed up GRB 130725A (SWIFT trigger 563980; Zhang et al. GCN 15028) beginning 111.9 min after the GRB trigger time. No optical counterpart is detected within the XRT error circle to the following conservative limits: Midtime from GRB Exposure Filter Magnitude (min) (s) ------------------------------------------------------------------------- 112.2 3x10s r' > 18.9 117.1 1x10s i' > 17 ------------------------------------------------------------------------- Values are calibrated against nearby SDSS field stars.