{
  "bibcode": "2017GCN.21147....1P",
  "body": "R.Podesta, C.Lopez, F. Podesta Observatorio Astronomico Felix Aguilar (OAFA),\nNational University of San Juan, Argentina\n\nH. Levato, C. Saffe\nInstituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE),\nSan Juan, Argentina\n\nV. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, D.Kuvshinov, A.V.Krylov,\nI.Gorbunov, P.Balanutsa, A.Kuznetsov, V.V.Chazov, D. Vlasenko\nLomonosov Moscow State University, Sternberg Astronomical Institut of MSU\n\nK.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk, O. Ershova \nIrkutsk State University\n\nV.Yurkov, Yu.Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\n\nMASTER   robotic telescope (6 square degrees) \nlocated in OAFA was pointed to the  GRB170525B (Barthelmy et al., GCN \n#21142) 15191 sec after notice \ntime and 43294 sec after trigger time at 2017-05-25 22:42:14 UT. On our \nfirst (180s exposure)  set we haven`t found optical transient  within \nMaster error-box (ra=90.8625 dec=-17.0861 r=0.1).\n\nThe 5-sigma upper limit has been about 18.3 mag\n\nThere is no OT at added images brighter 19.9 at Swift XRT position \n(Barthelmy et al., GCN #21142; Evans, GCN #21144 ).\n\nThe observations made on zenit distance = 59 degrees, galaxy latitude b = \n-18 degree.\nThe moon ( 0 % bright part) below the horizon (The altitude of the Moon is \n-8 degree ).\nObservations started at twilight. The sun  altitude  is -12.7 degree.\nThe object can be observed till 2017-05-26 01:12:20\n\nThe message may be cited.",
  "circularId": 21147,
  "createdOn": 1495791732000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 170524B: MASTER-OAFA  observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 170524B"
}