{
  "bibcode": "2010GCN.11161....1I",
  "body": "K.Ivanov, O.Chuvalaev, V.Poleschuk, E.Konstantinov, V.Lenok, O.Gres,\nS.Yazev, N.M.Budnev,\nIrkutsk State University\n\n\nE. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina,\nD.Kuvshinov, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov,\nD.Zimnukhov, M. Kornilov\nSternberg Astronomical Institute, Moscow State University\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\n\nV.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina\nBlagoveschensk Educational State University, Blagoveschensk\n\n\nV.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov\nUral State University, Kourovka\n\n\n\nTwo MASTER   robotic telescopes (MASTER-Net: http://observ.pereplet.ru)\nlocated  near Baykal Lake (Tunka)  and Blagoveschensk was pointed to the\nSwift GRB 100901A (Immler et al., GCN Circ 11159) 47  sec  after Notice \ntime  (103 s after trigger time) and 45 s after Notice time (101s after trigger \ntime).\n\n  We have a number polarization, unfiltered and R images  with exposition \n20, 30, 40, 60... s.  but near horizont.\n\nstart UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd? Filter\n--------------------------------------------------------------------------\n13:35:51       13:35:51     20       16.1       101.0          N    Unfiltr\n13:35:51       13:37:32     80       16.6       101.0          Y    Unfiltr\n13:35:53       13:36:13     20       16.5       103.0          N    Polariz\n13:35:53       13:38:02     90       17.4       103.0          Y    Polariz\n\n\nThe message may be cited.\n\nmailto: lipunov@sai.msu.ru",
  "circularId": 11161,
  "createdOn": 1283352956000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 100901A: MASTER Optical Early Limits",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 100901A"
}