TITLE: GCN CIRCULAR NUMBER: 14906 SUBJECT: GRB 130615A: Zadko observatory - Gingin optical observations DATE: 13/06/15 22:02:27 GMT FROM: Alain Klotz at IRAP-CNRS-OMP A. Klotz (IRAP-CNRS-OMP), D. Macpherson (UWA/ICRAR), D. Coward (UWA), B. Gendre (IRAP-CNRS-OMP), M. Boer, K. Siellez, H. Dereli , O. Bardho (UNS-CNRS-OCA), A. Williams (PO-UWA), R. Martin (PO-UWA) report: We imaged the field of GRB 130615A detected by SWIFT (trigger 558271) with the Zadko robotic telescope (D=100cm) located at the observatory - Gingin, Australia. The observations started 1.58h after the GRB trigger just after the beginning of the night. The elevation of the field increased from 30 degrees above horizon and weather conditions were good. We detect the afterglow candidate discovered by Elliott et al. (GCNC 14898). However, as mentioned by Frank et al. (GCNC 14901) the stellar object stays at a constant magnitude of R = 20.7 from 1.6h to 4.8h after the trigger. Due to the absence of fading of its brightness, we are not sure that the stellar object mentioned by Elliott et al. (GCNC 14898) is the GRB afterglow. Magnitudes were estimated with the nearby star NOMAD-1 0218-0667138 (R.A.=274.8458361 Dec=-68.1621056 J2000) R=17.840. Magnitudes are not corrected for galactic dust extinction.