{
  "bibcode": "2003GCN..2077....1I",
  "body": "M.A. Ibrahimov, I.M. Asfandiyarov, B.B. Kahharov (Ulugh Beg Astronomical\nInstitute of Uzbekistam Academy of Science), A.Pozanenko (IKI), V.Rumyantsev\n(on behalf of CrAO GRB team), G.Beskin (SAO) report:\n\n\nWe have observed the OT found by Peterson and Price  (GCN 1985) of GRB030329\nwith  1.5m telescope of  High-altitude Observatory at Mt.Maidanak.  The\ntelescope is equipped   with  CCD SITe (2000x800). The observations were\ncarried out under good seeing conditions (1\".0). Several BRI Bessel images\nwere obtained in April, 1. Based on star filed photometry by A. Henden (GCN\n2023)  we estimate the OT magnitude:\n\nUT, Apr 1 filter  exposure  mag       err\n\n18:42:24  R       300        17.082   0.021\n18:48:06  R       300        17.036   0.025\n18:53:48  B       600        17.707   0.072\n19:04:35  R       300        16.977   0.044\n19:10:09  R       600        17.016   0.027\n19:20:52  I        600        16.625   0.047\n19:31:41  R       600        17.045   0.047\n19:44:55  R       600        17.010   0.033\n19:56:01  B       600        17.766   0.031\n20:14:49  B       300        17.777   0.013\n20:20:28  R       300        17.022   0.011\n20:26:26  I        300        16.520   0.013\n20:32:10  B       300        17.799   0.015\n20:37:58  R       300        17.030   0.011\n20:43:39  I        300        16.531   0.013\n20:52:03  B       600        17.741   0.029\n21:02:42  R       300        17.006   0.023\n\nThe estimation is preliminary and may be improved.\n\nThis message may be cited.",
  "circularId": 2077,
  "createdOn": 1049330341000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 030329,  BRI photometry",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 030329"
}