{
  "bibcode": "2018GCN.22596....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, \nA.Kuznetsov, V.V.Chazov, A.V. Krylov, I. Gorbunov, D. Vlasenko, \nD.Zimnukhov, D.Kuvshinov, P.Balanutsa\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\nR. Podesta, F. Podesta, C. Lopez, C.Francile\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nH.Levato, C. Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nD. Buckley\nSouth African Astronomical Observatory\n\nO. Gres, N.M. Budnev, Yu.Ishmuhametova\nIrkutsk State University\n\nA. Tlatov, V.Senik, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nA. Gabovich, V. Yurkov, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\n\nMASTER-OAFA robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in Argentina was pointed to the  GRB180404B (LaPorte et al. GCN \n22590; Beardmore et al. GCN 22594) 27 sec after notice time and 45 sec \nafter trigger time at 2018-04-04 02:12:29 UT.\nOn our first 10s exposure  image with unfiltered mlim=16.5 (5-sigma) we \ndon't found optical transient  within SWIFT error-box (ra=53.3792 \ndec=-50.195 r=0.05 LaPorte et al. GCN 22590)\n\nMASTER auto-detection system detected OT with RA,Dec=53.392900; \n-50.214903\nand unfiltered m_OT = 18.4 (automatic reduction)\non the summary image with 670s exposition started on 2018-04-04 02:12:29 \n(mlim=19.7)\n\nThe message may be cited.\n\n\n====================================================================\n\n\nThe observations started at zenit distance = 73 degrees, galaxy latitude b \n= -51 degree.\nThe moon (86 % bright part) is 16 degrees above the horizon. The distance \nbetween  moon and  object is 115\nThe sun  altitude was -46.8 degree.",
  "circularId": 22596,
  "createdOn": 1522834788000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 180404B: MASTER-OAFA OT observation",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 180404B"
}