{
  "bibcode": "2018GCN.23310....1G",
  "body": "E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, \nN.Tyurina, P.Balanutsa,A.Kuznetsov, V.V.Chazov, D. Vlasenko\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nR. Podesta, F. Podesta, C. Lopez, C.Francile\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nHugo Levato \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\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nO. Gres, N.M. Budnev, Yu.Ishmuhametova\nApplied Physics Institute of Irkutsk State University\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\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  GRB181010.25 19 sec after notice time and 42 sec after trigger \ntime at 2018-10-10 05:56:33 UT. On our first (60s coadd exposure) coadd \nset we  found 1 optical transient within SWIFT error-box (ra=52.55 \ndec=-23.0344 r=0.05) brighter than 18.24.\n\n\n  T-Tmid      Date      Time       Expt.        Ra                Dec \nMag\n---------|---------------------|-------|-----------------|-----------------|-------\n       72   2018-10-10 05:56:33      60   (  3h 30m 16.8s , -23d  2m 14.9s) \n18.05\n\nThe 5-sigma upper limit has been about 18.7 mag\nThe message may be cited.\n\n\n====================================================================\n\n\nThe galactic latitude b = -53 deg., longitude l = 215 deg.\nThe observations made on zenit distance = 15 deg.The moon ( 2 % bright \npart) below the horizon (The altitude of the Moon is -50 deg. ).\nThe sun  altitude  is -45.7 deg.\nThe object can be observed till sunrise at 2018-10-10 10:03:45\n  .\n\n\n\nTHIS BLOCK FOR MASTER-Team USERS ONLY.\n\nLink to GRB181010.25 page: \nhttps://200.123.254.238:49004//master2/grb.php?not=2018-10-10+05%3A56%3A14&sat=SWIFT&gcrd=%2852.55d%2C-23.0344d%29&eb=0.05&trig=2018-10-10+05%3A55%3A51&n=GRB181010.25\nLong     transients in E.B. \nhttps://200.123.254.238:49004//master2/trans.php?wh=transients.coord2000@%27%3C%2852.55d%2C-23.0344d%29%2C0.1d%3E%27%3A%3Ascircle+and+transients.datetime%3E%3D%272018-10-10+05%3A55%3A51%27&class=9&t2=SWIFT+GRB181010.25+optical+counterpart+candidate\nShort    transients in E.B. \nhttps://200.123.254.238:49004//master2/trans3.php?wh=transients3.coord2000@%27%3C%2852.55d%2C-23.0344d%29%2C0.1d%3E%27%3A%3Ascircle+and+transients3.datetime%3E%3D%272018-10-10+05%3A55%3A51%27&class=-1&t2=SWIFT+GRB181010.25+optical+counterpart+candidate\nTwo tube transients in E.B. \nhttps://200.123.254.238:49004//master2/trans2.php?wh=transients2.coord2000@%27%3C%2852.55d%2C-23.0344d%29%2C0.1d%3E%27%3A%3Ascircle+and+transients2.datetime%3E%3D%272018-10-10+05%3A55%3A51%27&class=0&t2=SWIFT+GRB181010.25+optical+counterpart+candidate\nUndef. objects 1 image \nhttps://200.123.254.238:49004//master2/aobj.php?wh=stars.coord2000@%27%3C%2852.55d%2C-23.0344d%29%2C0.1d%3E%27%3A%3Ascircle+and+stars.class=0+and+stars.status+and+stars.proc_id=626837&t2=SWIFT+GRB181010.25+1+image+optical+counterpart+candidate\n\n\nThe observation and reduction will continue.\nThis circular was generated automatically.\nThe message may be cited.",
  "circularId": 23310,
  "createdOn": 1539154475000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 181010A: MASTER-Argentina OT detection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 181010A"
}