{
  "bibcode": "2014GCN.16381....1G",
  "body": "E. Gorbovskoy, V. Lipunov, M.Pruzhinskaya,  V.Kornilov, D.Kuvshinov, \nA.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, \nV.V.Chazov, D.Denisenko, A.Sankovich\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\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\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 II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in Kislovodsk was pointed to the  GRB140610A   16931 sec (~4.7 h) \nafter trigger time at 2014-06-10 21:13:41 UT directly after weather \nconditions became satisfactory. On our first single and coadd images  we \nhaven`t found optical transient  within Swift error-box (Evans et. al. GCN \n16375).\nThe 5-sigma unfiltgred upper limit has been about:\n\n\nT_start             Exptime  dT[s]  Limit  Coadd\n2014-06-10 21:13:41   180 s  17021  17.8    1\n2014-06-10 21:13:41   540 s  17241  18.3    3\n2014-06-10 21:13:41  3600 s  19079  18.5   20\n2014-06-10 21:13:41 2x3600 s 19079  18.7   40*\n\n* Coadd of images taken from two parallel tubes.\ndT is middle time of exposition (dT = T_middle - T_trigger)\nOur white (clear) band is well described by a parity 0.8R+0.2B (USNO B1).\nThe very high extinction E(B-V) ~ 2.6 �omplicates the analysis.\n\nThe message may be cited.",
  "circularId": 16381,
  "createdOn": 1402492743000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 140610A: MASTER  optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 140610A"
}