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TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2050 SUBJECT: GRB030329: Optical observations DATE: 03/03/31 20:37:36 GMT FROM: Vasilij Rumjantsev at CrAO <rum@crao.crimea.ua> E.Pavlenko, V.Rumyantsev, O.Antoniuk, N.Primak (CrAO) and A.Pozanenko (IKI) report: We continue to monitor the OT of GRB030329 (GCN 2005, 2028). The OT found by Peterson and Price (GCN 1985) was imaged Cassegrain 38-cm telescope of CrAO. Several 240 sec. exposures in R (Johnson) spectral band were obtained. Based on filed photometry by A. Henden (GCN 2023) we estimate the OT magnitude as Mid Time (UT) exposure OT March, 31 17:50:40 240 sec 16.92 +/-0.04 Taking into account R=16.8 +/- 0.1 at 18:43 obtained by A. Zeh, et al. (GCN 2048) one may suggest that light curve of OT starts new episode of re-brightening or flattering is still continuing. Detailed calibration and observations are continuing.
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