{
  "bibcode": "2018GCN.22593....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov,  N.Tyurina,\nA.Kuznetsov, V.Chazov, I. Gorbunov, D. Vlasenko, D.Kuvshinov, P.Balanutsa\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\nR. Podesta, Carlos Lopez and F. Podesta\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nA. Tlatov, V.Senik, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\nO. Gres, N.M. Budnev, O. Chuvalaev, Yu.Ishmuhametova\nIrkutsk State University\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nD. Buckley, S. Potter\nSouth African Astronomical Observatory\n\n\nMASTER-OAFA  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in Argentina was pointed to the  GRB180404A (Gropp et al. GCN \n22589) 21 sec after notice time and 43 sec after trigger time at \n2018-04-04 00:46:18 UT.\nOn our first 10s exposure  set we haven`t found optical transient with \n17.4 5-sigma upper limit in\nSWIFT XRT error-box (ra=83.549 dec=-37.17 r=4.2\").\n\nMASTER auto-detection system detected OT with RA,Dec=5h 34m 11s.66, -37d \n10m 03s.5 with unfiltered m_OT=19.8\non the summary image with 660s exposition started 2018-04-04 00:46:18.938UT,\nthat was discovered by Swift (Gropp et al. GCN 22589) and confirmed by \nVLT (Selsing et al. GCN 22591)\n\n====================================================================\n\nThe observations made on zenit distance = 42 degrees, galaxy latitude b = \n-30 degree.\nThe moon (87 % bright part) below the horizon (The altitude of the Moon is \n-1 degree ).\nThe sun  altitude  is -29.7 degree.\n\nThe message may be cited.\n\n\n\n1",
  "circularId": 22593,
  "createdOn": 1522819833000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 180404A: MASTER-OAFA OT observation",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 180404A"
}