TITLE: GCN GRB OBSERVATION REPORT NUMBER: 3775 SUBJECT: GRB050730, optical observations DATE: 05/08/06 11:16:35 GMT FROM: T.P. Prabhu at Indian Astro. Obs. B.C.Bhatt and D.K. Sahu communicate on behalf of a larger GRB collaboration group: GRB050730 was observed with the 2-m Himalayan Chandra Telescope of Indian Astronomical Observatory, Hanle, on 2005 July 31, 16:10 UT (300s+900s). The magnitude of the OT with repect to USNO B1.0 0862-0270612, 0862-0270590, and 0862-0264205 (GCN 3741) was R=21.39+/-0.08. This message may be cited.