TITLE: GCN CIRCULAR NUMBER: 15403 SUBJECT: GRB 131030A: Watcher OT detection DATE: 13/10/30 21:54:06 GMT FROM: Petr Kubanek at AIO Petr Kubánek (Porsche Engineering Services s.r.o. & Institute of Physics, Czech Republic), Martin Topinka, Lorraine Hanhol, Seamus Meehan (UCD, Ireland) reports on behalf of wider collaboration: Watcher telescope at Boyden Observatory, South Africa, running RTS2 observatory control system, started automatic observation of GRB 131030A (GCN 15402, E.Troja et.al.) at 20:57:24.070 UT. On image acquired on 20:58:49.830 UT, e.g. 171s post GRB, we clearly identify optical counterpart mentioned at the above GCN. Futher observations, as well as analysis, are ongoing.