TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2098 SUBJECT: GRB 030329, BVRI photometry DATE: 03/04/05 02:50:20 GMT FROM: Alexei Pozanenko at IKI, Moscow M.A. Ibrahimov, I.M. Asfandiyarov, B.B. Kahharov (Ulugh Beg Astronomical Institute of Uzbekistam Academy of Science), A.Pozanenko (IKI), V.Rumyantsev (CrAO), G.Beskin (SAO) on behalf of large collaboration report: We have observed the OT found by Peterson and Price (GCN 1985) of GRB030329 with 1.5m telescope of High-altitude Observatory at Mt.Maidanak. Several BVRI Bessel images were obtained on April, 3. Based on star filed photometry by A. Henden (GCN 2023) we refined the estimation reported in GCN 2084 and report new measurements: UT, Apr 3 filter exposure, s mag err 15:31:56 R 300 17.842 0.018 15:38:12 R 600 17.853 0.013 18:40:49 R 600 17.787 0.027 18:52:27 R 600 17.830 0.015 19:03:13 R 600 17.766 0.013 19:14:07 B 600 18.483 0.015 19:25:11 V 600 18.126 0.015 19:35:55 R 600 17.832 0.014 19:46:45 I 600 17.299 0.020 19:58:36 B 600 18.577 0.018 20:09:46 V 600 18.109 0.016 20:20:26 R 600 17.801 0.014 20:31:14 I 600 17.333 0.023 20:41:54 R 600 17.805 0.018 20:52:38 R 600 17.806 0.014 This message may be cited.