TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2046 SUBJECT: GRB 030329: further optical observations DATE: 03/03/31 11:38:58 GMT FROM: Denis Denissenko at IKI, Moscow R. Burenin, R. Sunyaev, M. Pavlinsky, D. Denissenko, O. Terekhov, A. Tkachenko (IKI); Z. Aslan, K. Uluc, I. Khamitov (TUG); U. Kiziloglu, A. Alpar, A. Baykal (METU); I. Bikmaev, N. Sakhibullin, V. Suleymanov (KSU) report: The optical afterglow of GRB 030329 (Peterson and Price, GCN 1985) was observed with 1.5-m Russian-Turkish Telescope RTT150 at Bakyrlytepe (TUBITAK National Observatory, Turkey; see also GCN 2001 and 2024) in the night of March 30/31. The R magnitudes of the afterglow are: t-t0,hours UT R 34.69 30.961 16.5 38.12 31.073 16.39 The magnitude of "A" star was assumed to be R=16.20. First observation was made under poor sky conditions in R filter only. Second set of four images was obtained in each of BVRI filters. This message may be cited.