{
  "bibcode": "2015GCN.18392....1L",
  "body": "V. Lipunov, E. Gorbovskoy,   N.Tyurina, V.Kornilov, P.Balanutsa,\nA.Kuznetsov, D.Kuvshinov,\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nK.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk 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\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\n\nMASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in SAAO was pointed to the probable GRB  (Swift Trigger 657564) 24 \nsec after notice time and 108 sec after trigger time at 2015-10-04 \n18:10:55 UT. On our first (20s exposure)  set we not  found  optical \ntransient within SWIFT error-box (Cenko et. al GCN 18389) brighter then \n16.0.\n\nAnalysis of highly complicated proximity to the Milky Way (Galactic \nlatitude l=-3.5) and strong winds (speed=65 km/h)\n\nThe 5-sigma upper limit has been about 16.0 mag\nThe message may be cited.",
  "circularId": 18392,
  "createdOn": 1444037029000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Swift Trigger 657564: MASTER-NET early optical observations.",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>"
}