{
  "bibcode": "2017GCN.21054....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, D.Kuvshinov, A.V.Krylov,\nI.Gorbunov, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D. Vlasenko\nLomonosov Moscow State University, Sternberg Astronomical Institut of MSU\n\nR.Podesta, C.Lopez, F. Podesta Observatorio Astronomico Felix Aguilar (OAFA) , \nNational University of San Juan, Argentina\n\nH. Levato, C. Saffe\nInstituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),\nSan Juan, Argentina\n\nK.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk, O. Ershova \nIrkutsk State University\n\nV.Yurkov, Yu.Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nMASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in \nOAFA was pointed to the  GRB170428A (Beardmore et al., GCN 21042) 17 sec \nafter notice time and 31 sec after \ntrigger time at 2017-04-28 09:14:14 UT (Podesta et al., GCN 21044).\n\nOur unfiletred limits are:\n\n     Date time \t       Exp \tProc.type \tLim.\n                         (s)\n\n2017-04-28 09:14:14\t10 \tAlert (SWIFT) \t16.6 \n2017-04-28 09:15:04     20 \tAlert (SWIFT) \t17.1 \n2017-04-28 09:16:07     30 \tAlert (SWIFT) \t17.6\n2017-04-28 09:17:19     40 \tAlert (SWIFT) \t17.9\n2017-04-28 09:18:42     60 \tAlert (SWIFT) \t18.2 \n2017-04-28 09:20:24     80 \tAlert (SWIFT) \t18.6\n2017-04-28 09:17:19    180    SumAlert(SWIFT) \t19.1 \n2017-04-28 09:22:28    110 \tAlert (SWIFT) \t18.9\n2017-04-28 09:24:59    140 \tAlert (SWIFT) \t19.0\n2017-04-28 09:28:01    170 \tAlert (SWIFT) \t19.2 \n2017-04-28 09:22:28    420    SumAlert(SWIFT)   19.7\n2017-04-28 09:31:33    180 \tAlert (SWIFT) \t19.3\n2017-04-28 09:35:16    180 \tAlert (SWIFT) \t19.4 \n2017-04-28 09:38:59    180 \tAlert (SWIFT) \t19.5\n2017-04-28 09:31:33    540    SumAlert (SWIFT) \t19.9 \n2017-04-28 09:42:42    180 \tAlert (SWIFT) \t19.5\n2017-04-28 09:48:50    180 \tAlert (SWIFT) \t19.5 \n2017-04-28 09:55:02    180 \tAlert (SWIFT) \t19.5\n2017-04-28 09:42:42    540    SumAlert (SWIFT) \t20.1\n2017-04-28 09:58:46    180 \tAlert (SWIFT) \t19.4\n2017-04-28 10:02:26    180 \tAlert (SWIFT) \t19.1 \n2017-04-28 10:06:07    180 \tAlert (SWIFT) \t18.8\n2017-04-28 09:58:46    540    SumAlert (SWIFT)  19.3\n2017-04-28 10:09:49    180      Alert (SWIFT)   18.3 \n2017-04-28 09:31:33   1800    SumAlert (SWIFT) \t20.3\n2017-04-28 10:02:26   1440    SumAlert (SWIFT) \t19.8\n\n\nThe message may be cited.",
  "circularId": 21054,
  "createdOn": 1493637205000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Short GRB 170428A: MASTER-OAFA  final reduction  of the optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 170428A"
}