{
  "bibcode": "2011GCN.12050....1I",
  "body": "K.Ivanov, O. Gres, V.A.Poleshchuk, S.Yazev, N.M.Budnev, \nO.Chuvalaev\nIrkutsk State University\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,\nM.Kornilov, A.Sankovich\nSternberg Astronomical Institute, Moscow State University\n\n\nV.Krushinski, I.Zalozhnich, A. Popov\nUral State University, Kourovka\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov,V. Senik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Yurkov, Yu.Sergienko, I.Kudelina\nBlagoveschensk Educational State University, Blagoveschensk\n\n  MASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in Tunka(Siberia) was pointed to the  GRB 110530A (D'Avanzo et \nal, GCN12046)  12 sec s after notice time and 73 sec after GRB time at\n2011-05-30 15:32:15.215 UT. On our first (10s exposure) set \nwe haven`t found optical transient  within \nSWIFT error-box.\nThe 5-sigma upper limit has been about 15.2 mag (Polarization + R band).\n\nThe OT appears at 15:42:14 UT  (t_start-t_triger = 673 s, Exp_time=130s). \nMag ~18.3 (R).\n\nAfter that we see OT on our images in different filters \n(R,I,Unfiltered,R+P).\n20 min ago (2011-05-30 17:44:42):  R ~19.5+-0.5.\n\nThe reduction is continued.\n\nThis message may be cited.\n\n[GCN OPS NOTE(30may11):  Per author's request, the subject line\nwas changed from \"110521\" to \"110530\".]",
  "circularId": 12050,
  "createdOn": 1306778937000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 110530A: MASTER OT observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 110530A"
}