{
  "bibcode": "2018GCN.23009....1G",
  "body": "E. Gorbovskoy, V.Lipunov, N.Tiurina, V. Lipunov, V.Kornilov, A.Kuznetsov, \nV.Chazov, I.  Gorbunov, D.Zimnukhov, D.Kuvshinov, P.Balanutsa, \nV.Vladimirov, D.Vlasenko\nLomonosov Moscow State University,SAI\n\nD. Buckley,\nSouth African Astronomical Observatory (SAAO)\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias (IAC)\n\nA. Tlatov, V.Senik, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nR. Podesta, F. Podesta, C. Lopez, C.Francile\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nH.Levato,\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nO. Gres, N.M.Budnev , Yu.Ishmuhametova\nIrkutsk State University (ISU)\n\nA. Gabovich, V. Yurkov, Yu. Sergienko\nBlagoveschensk Educational State University (BSPU)\n\nMASTER-Kislovodsk robotic telescope (MASTER-Net: \nhttp://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, \nvol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station \nof Pulkovo observatory) was pointed to the  GRB180720C 21 sec after notice \ntime and 102 sec after trigger time at 2018-07-20 22:25:39 UT.\n\n\nMASTER-IAC robotic telescope (MASTER-Net: http://observ.pereplet.ru, \nLipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in \nSpain (IAC Teide Observatory) was pointed to the  GRB180720C 258 sec after \nnotice time and 1668 sec after trigger time at 2018-07-20 22:56:57 UT.\n\nMASTER-SAAO robotic telescope (MASTER-Net: http://observ.pereplet.ru, \nLipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in \nSouth Africa (South African Astronomical Observatory) was pointed to the \nGRB180720C 30 sec after notice time and 111 sec after trigger time at \n2018-07-20 22:25:48 UT.\n\nMASTER-OAFA robotic telescope (MASTER-Net: http://observ.pereplet.ru, \nLipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in \nArgentina (OAFA observatory of San Juan National University) was pointed \nto the  GRB180720C 21 sec after notice time and 102 sec after trigger time \nat 2018-07-20 22:25:39 UT.\n\n\nWe have a number of images on this observatories. The observations made \nvery  close to Galactic center (~ 1 degree).  The upper limit on \nobservaroties is about 18 mag.\n\nThe message may be cited.",
  "circularId": 23009,
  "createdOn": 1532249503000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 180720C: MASTER optical observation",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 180720C"
}