{
  "bibcode": "2011GCN.12789....1K",
  "body": "V.Krushinski, I.Zalozhnich, A. Popov\n  Ural State University, Kourovka\n\n\nE. Sinykov, V.Yurkov, Yu.Sergienko, D.Varda,\n  Blagoveschensk Educational State University, Blagoveschensk\n\n  E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski,\nN.Tyurina, N.Shatskiy, P.Balanutsa, V.V.Chazov,  A.Kuznetsov,\nD.Zimnukhov, M. Kornilov, A.Kuznetsov, D.Zimnukhov, M. Kornilov,\nA.Sankovich, S. Shurpakov\n  Sternberg Astronomical Institute, Moscow State University\n\n  K.Ivanov, V.A.Poleshchuk, S.Yazev, N.M.Budnev, O.Gres, \nO.Chuvalaev,E.Konstantinov,\n  Irkutsk State University\n\n  A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\n  Kislovodsk Solar Station of the Pulkovo Observatory\n\n\nMASTER II  robotic double telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in Blagoveschensk was pointed\nto the  GRB111228A (Ukwatta et al., GCN Circ R12737) 191 sec  after notice \ntime and 244 sec after\nGRB time at 2011-12-28 15:48:47.127 UT (Sinykov et al., GCN Circ 12756).\n\nMASTER II  robotic double telescope (MASTER-Net: \nhttp://observ.pereplet.ru)\nlocated near Kislovodsk was pointed\nto the  GRB111228A  ~6.5 hours after\nGRB time at 2011-12-28 22:24:47 UT.\n\nThe results of our photometry are:\n\n\n    Date        UT       Exp  mag   Err      Filter\n               Start     (s)\n\n2011-12-28  15:48:47.1   20  16.9  0.2       P|\n2011-12-28  15:48:47.1   20  16.5  0.2       P-\n2011-12-28  15:49:34.7   30  17.1  0.2       P|\n2011-12-28  15:49:34.7   30  16.7  0.2       P-\n2011-12-28  15:50:37.3   40  16.8  0.2       P|\n2011-12-28  15:50:37.3   40  17.3  0.2       P-\n2011-12-28  15:51:43.1   50  17.6  0.2       P|\n2011-12-28  15:51:43.1   50  17.5  0.2       P-\n2011-12-28  15:52:59.7   70  16.8  0.2       P|\n2011-12-28  15:52:59.7   70  17.1  0.2       P-\n2011-12-28  15:54:41.3   90  17.3  0.2       P|\n2011-12-28  15:54:41.3   90  17.3  0.2       P-\n2011-12-28  15:56:38.4  110  17.0  0.2       P|\n2011-12-28  15:56:38.4  110  17.6  0.2       P-\n2011-12-28  16:01:44.8\t180  17.3  0.2       P|\n2011-12-28  16:01:44.8  180  17.6  0.2       P-\n2011-12-28  22:24:47.9 \t180  19.0  0.3       V\n2011-12-28  22:24:47.9  180  18.3  0.3       R\n2011-12-28  22:28:14.1\t180  18.9  0.3       V\n2011-12-28  22:28:14.1  180  18.8  0.3       R\n2011-12-28  22:31:42.7\t180  19.3  0.3       V\n2011-12-28  22:31:42.7  180  18.6  0.3       R\n2011-12-29  00:13:44.5  180  18.8  0.3       R\n2011-12-29  00:17:12.7  180  19.4  0.3       R\n2011-12-29  00:20:45.7  180  18.9  0.3       R\n2011-12-29  00:20:45.7  180  19.5  0.3       V\n2011-12-29  01:45:51.9  180  19.4  0.3       R\n2011-12-29  01:52:48.1  180  18.7  0.3       R\n\nP|, P-   - are the 2 polarisations in white\n\nThe message may be cited.",
  "circularId": 12789,
  "createdOn": 1325321330000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 111228A: MASTER-Net optical photometry",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 111228A"
}