{
  "bibcode": "2013GCN.14397....1Y",
  "body": "V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nE. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, \nN.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, \nD.Denisenko,  A.Sankovich\nSternberg Astronomical Institute, Moscow State University\n\nK.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nV.Krushinski, I.Zalozhnih,  A. Popov\nUral Federal University, Kourovka\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\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\nMASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in Blagoveschensk was pointed to the  GRB130419B 41 sec after \nnotice time and 120 sec after GRB time at 2013-04-19 17:26:37.875 UT. On \nour first (20s exposure) set we haven`t found optical transient  within \nSWIFT error-box (ra=13 34 34 dec=+37 14 24 r=0.066667).\nThe 5-sigma upper limit has been about 16.48mag\nThe analysis and determination of a limit it is complicated by the close \nbright star.\nThe message may be cited",
  "circularId": 14397,
  "createdOn": 1366396318000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 130419B (Swift trigger Trigger 553930): MASTER-Net optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 130419B"
}