{
  "bibcode": "2018GCN.23586....1G",
  "body": "E. Gorbovskoy, V. Lipunov, N.Tiurina,  V.Kornilov, \nP.Balanutsa, A.Kuznetsov, D. Vlasenko, D.Kobtsev\n(Lomonosov Moscow State University, SAI),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix \nAguilar),\n\nH. Levato\n(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio of San Juan \nNational University, Argentina)\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley (South African Astronomical Observatory),\n\nA. Tlatov, V.Senik,  D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nO. Gress, N.M. Budnev, S. Yazev, O. Chuvalaev (Irkutsk State University, API)\n\nV. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State \nUniversity)\n\n\nMASTER-SAAO robotic telescope  (Global MASTER-Net: \nhttp://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, \nvol. 2010, 30L)  located in South Africa (South African Astronomical \nObservatory) was pointed to the  FERMI and IPN  GRB181227A (E. Bissaldi et \nal. GCN  23569, Hurley et al  23577 44386 sec after trigger time at \n2018-12-27 18:36:46 UT, with upper limit up to  20.4 mag. Observations \nstarted at twilight, immediately after sunset.  The observations began at \nzenit distance = 25 deg. The sun  altitude  is -9.8 deg.\n\nMASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was \npointed to the  FERMI and IPN  GRB181227A  47842 sec after trigger time at \n2018-12-27 19:34:23 UT, with upper limit up to  18.0 mag. The observations \nbegan at zenit distance = 85 deg. The sun  altitude  is -17.0 deg.\n\nMASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of \nSan Juan National University) was pointed to the  FERMI and IPN \nGRB181227A 1 days 7760 sec after trigger time at 2018-12-28 08:26:20 UT, \nwith upper limit up to  20.5 mag. Observations started at twilight.  The \nobservations began at zenit distance = 83 deg. The sun  altitude  is -12.7 \ndeg.\n\nThe galactic latitude b = -60 deg., longitude l = 98 deg.\n\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/observ.php?id=894852\n\nNo OT found yet.\n\nThe message may be cited.\n\n[GCN OPS NOTE(29dec18): Per author's request, the name of the GRB in the SUBJECT-line\nwas changed from \"GRB 181228A\" to \"GRB 181227A\".]",
  "circularId": 23586,
  "createdOn": 1546074141000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 181227A: Global MASTER Net  oprtical inspection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 181227A"
}