TITLE: GCN GRB OBSERVATION REPORT NUMBER: 2091 SUBJECT: GRB030329: final R-band light curve by MASTER DATE: 03/04/04 13:41:38 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, A. Krylov, V. Kornilov, G. Borisov, D. Kuvshinov, A. Belinski, I. Chilingarian, M. Kuznetsov, S. Potanin, V. Vitrischak, G. Antipov Sternberg Astronomical Institute, Alexsandr Krylov Observatory, Moscow report: The OT of GRB030329 (Peterson and Price, GCN 1985) was observed by MASTER system (Lipunov et al., GCN 2002, GCN 2035). Here we represent pre-final light curve of the OT. We used more than 200 direct images to obtain field photometry. Several groups of images were summarized to achieve better S/N ratio and smaller uncertanities of measurements. As the final result, we represent 64 points. Magnitude calibration was made according to the data, presented in GCN 2023 (A. Henden). 4 stars were used to do the calibration. Big uncertanities of magnitude measurements are caused by weather conditions. First points were made just after sunset on the blue sky, last points were made through cirruses near the horizont. From these data we obtained new power law flux decreasing during 8 hours of observations (t-t0 from 5.2h to 13.5h): F ~ t^(-alpha), alpha=1.22+-0.03 Rmag = 15.8 + 1.2*2.5*log(age in days) New light curve plots available at old locations: http://observ.pereplet.ru/images/GRB030329_R_lc.gif http://www.sai.msu.su/~chil/GRB030329_R_lc.ps date UT t-t0,hrs R errR 03/29/2003 16:51:49 5.24691 13.744 0.417 03/29/2003 16:54:27 5.29080 13.934 0.409 03/29/2003 17:02:12 5.41997 13.702 0.226 03/29/2003 17:07:36 5.50997 14.012 0.211 03/29/2003 17:12:04 5.58441 13.708 0.164 03/29/2003 17:14:29 5.62469 13.854 0.151 03/29/2003 17:19:18 5.70497 13.983 0.097 03/29/2003 17:34:11 5.95302 14.118 0.172 03/29/2003 17:36:19 5.98858 13.908 0.103 03/29/2003 17:40:01 6.05024 13.972 0.101 03/29/2003 17:42:44 6.09552 14.043 0.079 03/29/2003 17:46:24 6.15663 14.004 0.081 03/29/2003 17:49:09 6.20247 14.007 0.078 03/29/2003 17:52:18 6.25497 13.971 0.083 03/29/2003 17:55:22 6.30608 13.943 0.073 03/29/2003 17:59:49 6.38024 14.092 0.085 03/29/2003 18:11:56 6.58219 14.007 0.125 03/29/2003 18:21:10 6.73608 14.126 0.111 03/29/2003 18:40:45 7.06247 14.180 0.083 03/29/2003 18:43:29 7.10802 14.145 0.085 03/29/2003 18:46:06 7.15163 14.090 0.083 03/29/2003 18:48:46 7.19608 14.169 0.085 03/29/2003 18:51:23 7.23969 14.147 0.087 03/29/2003 18:54:06 7.28497 14.128 0.085 03/29/2003 18:56:48 7.32997 14.254 0.088 03/29/2003 18:59:29 7.37469 14.175 0.084 03/29/2003 19:02:06 7.41830 14.231 0.089 03/29/2003 19:04:48 7.46330 14.141 0.080 03/29/2003 19:07:29 7.50802 14.325 0.098 03/29/2003 19:12:54 7.59830 14.216 0.101 03/29/2003 19:15:32 7.64219 14.261 0.098 03/29/2003 19:18:10 7.68608 14.070 0.088 03/29/2003 19:21:27 7.74080 14.168 0.121 03/29/2003 19:52:30 8.25830 14.395 0.108 03/29/2003 19:55:12 8.30330 14.375 0.105 03/29/2003 19:58:05 8.35136 14.450 0.101 03/29/2003 20:00:50 8.39719 14.431 0.110 03/29/2003 20:03:42 8.44497 14.336 0.094 03/29/2003 20:08:30 8.52497 14.499 0.097 03/29/2003 20:11:15 8.57080 14.318 0.100 03/29/2003 20:14:05 8.61802 14.463 0.100 03/29/2003 20:16:50 8.66386 14.324 0.093 03/29/2003 20:19:28 8.70774 14.432 0.099 03/29/2003 20:24:45 8.79580 14.440 0.061 03/29/2003 20:36:35 8.99302 14.541 0.075 03/29/2003 20:41:20 9.07219 14.515 0.075 03/29/2003 20:45:58 9.14941 14.437 0.074 03/29/2003 20:51:17 9.23802 14.514 0.080 03/29/2003 20:56:44 9.32886 14.644 0.092 03/29/2003 21:01:30 9.40830 14.578 0.092 03/29/2003 21:07:22 9.50608 14.458 0.087 03/29/2003 21:17:37 9.67691 14.557 0.079 03/29/2003 21:28:18 9.85497 14.604 0.079 03/29/2003 21:39:07 10.03524 14.740 0.078 03/29/2003 21:49:59 10.21636 14.616 0.065 03/29/2003 22:03:48 10.44663 14.698 0.070 03/29/2003 22:16:04 10.65108 14.493 0.068 03/29/2003 22:26:44 10.82886 14.719 0.080 03/29/2003 22:41:42 11.07830 14.632 0.089 03/29/2003 23:03:55 11.44858 14.854 0.113 03/29/2003 23:35:46 11.97941 14.905 0.117 03/30/2003 00:04:04 12.45108 14.859 0.090 03/30/2003 00:23:25 12.77358 14.837 0.129 03/30/2003 00:52:04 13.25108 15.064 0.162 03/30/2003 01:12:16 13.58774 15.002 0.161 03/30/2003 01:35:52 13.98108 15.594 0.413 We thank Sergey M. Bodrov (general director of optical company "Ochkarik") for financial and equipment support of MASTER research project. This message may be cited.