{
  "bibcode": "2012GCN.13216....1I",
  "body": "K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nE. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, \nN.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, \nA.Kuznetsov, A.Sankovich\nSternberg Astronomical Institute, Moscow State University\n\nV.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Krushinski, I.Zalozhnich,  A. Popov\nUral State 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\nMASTER robotic Very Wide Field Cameras    (MASTER: http://observ.pereplet.ru) \nlocated in Tunka was pointed to the  FERMI GRB 120402B (Collazzi, \nGCN 13194) 64 sec after GRB time at 2012-04-02 16:05:04.583 UT.\nOn our first (10s exposure) set we haven`t \nfound optical transient  within FERMI error-box (RA = 223.7, Dec = -10.4, \nRad=9 degrees (3 sigma + 3 deg. of systematic error ) .\nThe MASTER VWF cameras cover full 1 sigma (+ 3 deg. sys. error) \nerror box and ~ 95% 3 sigma  (+ 3 deg. sys. error) error box.\nThe unfiltered upper limit is 12.0 mag.\n\n\nThe message may be cited.",
  "circularId": 13216,
  "createdOn": 1333558584000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 120402B: MASTER early OT limit",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 120402B"
}