{
  "bibcode": "2018GCN.23359....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, N.Tyurina,  P.Balanutsa,\nA.Kuznetsov, V.V.Chazov, D. Vlasenko\nLomonosov Moscow State University,\nSternberg Astronomical Institute, Moscow State University\n\nD. Buckley, S. Potter, A. Kniazev, M. Kotze\nSouth African Astronomical Observatory\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nK. Ivanov, O. Gres, N.M. Budnev, S. Yazev, O. Chuvalaev, V. Poleshchuk\nIrkutsk State University\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\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\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\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 starting survey \non the SWIFT  GRB181020.79 error-box (ra=00 55 55.78 dec=-47 22 52 \nr=0.05; Moss et all., GCN #23349; Axelsson et al., Fermi LAT, GCN #23350) \n7550 sec after notice time and 7572 sec \nafter trigger time at 2018-10-20 \n21:06:45 UT. The delay connected with weather condition around trigeer \ntime. The 5-sigma upper \nlimit on our first (540s exposure) coadd set is about 19.5 mag\n\nWe see possible nonmonotonic behaviour OT detected UVOT ( Moss et all., \nGCN #23349;). More accurate (handmade) reduction will be coming.\n\nThe automatic OT LC is available at \nhttp://observ.pereplet.ru/images/GRB181020A_LC.jpg\n\nThe galactic latitude b = -70 deg., longitude l = 300 deg.\nThe observations made on zenit distance = 16 deg.The moon (85 % bright \npart) is 60 deg. above the horizon. The distance between  moon and  object \nis 45 degrees.\nThe sun  altitude  is -43.7 deg.\nThe object can be observed till sunrise at 2018-10-21 03:49:44\n\nThis message may be cited.",
  "circularId": 23359,
  "createdOn": 1540145137000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 181020A: Global MASTER Net OT  observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 181020A"
}