{
  "bibcode": "2011GCN.11897....1Y",
  "body": "V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina\nBlagoveschensk Educational State University, Blagoveschensk\n\nE. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, \nN.Shatskiy, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, \nD.Zimnukhov, M. Kornilov, A.Kuznetsov, D.Zimnukhov, M. Kornilov, \nA.Sankovich\nSternberg Astronomical Institute, Moscow State University\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov\nUral State University, Kourovka\n\nK.Ivanov, S.Yazev, N.M.Budnev, E.Konstantinov, V.Lenok, O.Gres, \nO.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nMASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in Blagoveschensk was pointed to the  GRB110407   25 sec s after \nnotice time and 107 sec after GRB time at 2011-04-07 14:08:28.65 UT. On \nour first (20s exposure) set we haven`t found optical transient  within \nSWIFT-BAT error-box.\nThe 5-sigma unfiltred upper limit has been about 17.8 mag\n\nMASTER II robotic telescope in Tunka also pointed on GRB110407 at same \ntime in two polarizations. Unfortunately during this moment there was a \nstrong clouds in the given direction and a upper limit very small.\n\nThe message may be cited.",
  "circularId": 11897,
  "createdOn": 1302187900000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 110407A: MASTER early optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 110407A"
}