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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2077 SUBJECT: GRB 030329, BRI photometry DATE: 03/04/03 00:39:01 GMT FROM: Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru> M.A. Ibrahimov, I.M. Asfandiyarov, B.B. Kahharov (Ulugh Beg Astronomical Institute of Uzbekistam Academy of Science), A.Pozanenko (IKI), V.Rumyantsev (on behalf of CrAO GRB team), G.Beskin (SAO) 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. The telescope is equipped with CCD SITe (2000x800). The observations were carried out under good seeing conditions (1".0). Several BRI Bessel images were obtained in April, 1. Based on star filed photometry by A. Henden (GCN 2023) we estimate the OT magnitude: UT, Apr 1 filter exposure mag err 18:42:24 R 300 17.082 0.021 18:48:06 R 300 17.036 0.025 18:53:48 B 600 17.707 0.072 19:04:35 R 300 16.977 0.044 19:10:09 R 600 17.016 0.027 19:20:52 I 600 16.625 0.047 19:31:41 R 600 17.045 0.047 19:44:55 R 600 17.010 0.033 19:56:01 B 600 17.766 0.031 20:14:49 B 300 17.777 0.013 20:20:28 R 300 17.022 0.011 20:26:26 I 300 16.520 0.013 20:32:10 B 300 17.799 0.015 20:37:58 R 300 17.030 0.011 20:43:39 I 300 16.531 0.013 20:52:03 B 600 17.741 0.029 21:02:42 R 300 17.006 0.023 The estimation is preliminary and may be improved. This message may be cited.
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