{
  "bibcode": "2018GCN.23258....1L",
  "body": "V. Lipunov, E. Gorbovskoy, D. Vlasenko, N.Tiurina,\nV.Kornilov, A.Kuznetsov, V.Chazov, I.  Gorbunov,\nD.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov,\nLomonosov Moscow State University,SAI\n\nA. Tlatov, V.Senik, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\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\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-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 starting \nsurvey on the MAXI  GRB180923.17 error-box (ra=02 33 12 dec=+06 18 02 r=1) \n2777 sec after notice time and 7954 sec after trigger time at 2018-09-23 \n06:21:04 UT. The 5-sigma upper limit on our first (60s exposure)  set is \nabout 17.9 mag\n\nNo OT detected.\n\nThe galacitc latitude b =  0 deg.\n\nThe observations made on zenit distance = 39 deg.The moon (97 % bright\npart) is 42 deg. above the horizon. The distance between  moon and  object\nis 59\nThe sun  altitude  is -48.6 deg.\nThe object can be observed till sunrise at 2018-09-23 10:25:33\n  .\n\n\nThe cover map is availavle at \nhttp://observ.pereplet.ru/images/GRB180923A_cover_map.png\n\nOnly for MASTER-team:\n\nThe OT candidate available here \nhttps://200.123.254.238:49004//master2/trans.php?wh=transients.coord2000@%27%3C%2838.3d%2C6.30056d%29%2C2d%3E%27%3A%3Ascircle+and+transients.datetime%3E%3D%272018-09-23+04%3A08%3A30%27&class=9&t2=MAXI+GRB180923.17+optical+counterpart+candidate\n\nThe full information about this GRB180923.17 available here \nhttps://200.123.254.238:49004//master2/grb.php?not=2018-09-23+05%3A34%3A46.484065&sat=MAXI&gcrd=%2838.3d%2C6.30056d%29&eb=1&trig=2018-09-23+04%3A08%3A30&n=GRB180923.17\n\n\nThe message may be cited.",
  "circularId": 23258,
  "createdOn": 1537691886000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 180923A: MASTER inspection MAXI/GSC error box",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 180923A"
}