TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2079 SUBJECT: GRB 030329: optical observations DATE: 03/04/03 10:28:40 GMT FROM: Rodion Burenin at IKI, Moscow R. Burenin, R. Sunyaev, M. Pavlinsky, D. Denissenko, O. Terekhov, A. Tkachenko (IKI); Z. Aslan, I. Khamitov, M. Parmaksizoglu (TUG); U. Kiziloglu, A. Alpar, A. Baykal (METU); I. Bikmaev, N. Sakhibullin, V. Suleymanov (KSU) report: We observed the GRB 030329 afterglow (Peterson and Price, GCN 1985) with 1.5-m Russian-Turkish Telescope RTT150 at Bakyrlytepe, in BVRI Bessel filters. Assuming that the magnitude of "A" star is R=16.20, we measured R=17.94 for UT= April 3.05 (109.5 hours after the burst). This message may be cited.