TITLE: GCN CIRCULAR NUMBER: 7275 SUBJECT: GRB 080205: RTT150 optical observations DATE: 08/02/08 21:02:03 GMT FROM: Rodion Burenin at IKI, Moscow R. Burenin, A. Tkachenko, M. Pavlinsky, R. Sunyaev (IKI), I. Khamitov, Z. Eker (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.), I. Bikmaev, N. Sakhibullin (KSU/AST) report: The optical counterpart of GRB 080205 (Li et al., GCN 7251) was observed with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey). We made two sets of BVRI images on Feb 05 approximately at 18:00 and 22:00 UT (10 and 14 hours after the burst). The afterglow is detected near the limit of our images, i.e. near about R=23.5 (USNO B1.0 calibrated), in agreement with later INT observation (Rol and Anderson, GCN 7258).