{
  "bibcode": "2015GCN.17487....1I",
  "body": "K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nE. Gorbovskoy, V. Lipunov,  M.Pruzhinskaya, V.Kornilov, D.Kuvshinov,\nN.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov,\nD.Denisenko, A.Sankovich\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\nV.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Krushinsky, I.Zalozhnih,  A. Popov\nUral Federal University, Yekaterinburg, Kourovka\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\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 Tunka was pointed to the  GRB150222A  58 sec after notice time \nand 76 sec after trigger time at 2015-02-22 16:57:57 UT in two \npolarizations. On our first (10s \nexposure)  set we haven`t found optical transient  within SWIFT error-box \n(Bernardini  et. al GCN 17486).\nThe 5-sigma upper limit has been about 15.5 mag\nThe observations  made on high zenith distance (z=75 d).\nThe message may be cited.",
  "circularId": 17487,
  "createdOn": 1424625552000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 150222A: MASTER early  optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 150222A"
}