{
  "bibcode": "2015GCN.17680....1G",
  "body": "E. Gorbovskoy, V. Lipunov,  N.Tyurina, V.Kornilov, \nP.Balanutsa, A.Kuznetsov, D.Kuvshinov,\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nK.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\n\nV.Krushinski, I.Zalozhnih,  A. Popov\nUral Federal University, Kourovka\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nClaudio Mallamaci, Carlos Lopez and Federico Podest\nObservatorio Astronomico Felix Aguilar (OAFA)\n\n\n\nMASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in SAAO was pointed to the  GRB150403A (Lien et al. GCN 17665) \n20418 sec after notice time and 20434  sec (5.7h) after trigger time at \n2015-04-04 03:34:51 UT immediately after suitable weather condition came, \nin automatic mode. Observation lasted about 30 minutes, until the weather \nbecame bad again. We detect a faint OT on a Swift UVOT position (Kuin et al. GCN17673).\nThe estimated unfiltered magnitude is:\n\nDate       time_start  T0-Tmid[s]  Expt.[s]   Mag  Coadd\n2015-04-04 03:34:51.49  20840         720    19.2  4\n\n\nOur unfiltered  band  is well described by a parity 0.8R+0.2B (USNO B1).\n\nThe message may be cited.",
  "circularId": 17680,
  "createdOn": 1428341075000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 150403A: MASTER-net optical observation",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 150403A"
}