{
  "bibcode": "2018GCN.22874....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov,  N.Tiurina, A.Kuznetsov, V.Chazov,\nI. Gorbunov, D. Vlasenko, D.Zimnukhov, D.Kuvshinov, P.Balanutsa, V.Vladimirov\nLomonosov Moscow State University,SAI\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\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\nD. Buckley\nSouth African Astronomical Observatory\n\nO. Gres, N.M.Budnev , Yu.Ishmuhametova\nIrkutsk State University\n\nA. Gabovich, V. Yurkov, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\n\n\nMASTER-IAC robotic telescope (MASTER-Net: http://observ.pereplet.ru Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) ,\nlocated in Teyde Observatory (IAC, Spain),\nwas pointed to the IPN (Svinkin et al. GCN22864, Kozlova et al. GCN22868) Triangulation GRB180626C / Fermi trigger 551697835 \n(GRB_Time  18/06/26 09:23:50.65UT; RA,Dec(2000)=19h 00m 14s +44d 49' 12\" (GRB_ERROR: 8.21 deg radius, statistical only  , see \nhttps://gcn.gsfc.nasa.gov/other/551697835.fermi) also inspected by ZTF (Coughlin et al. GCN22871)\n  at 2018-06-26 21:37:30UT-22:53:48 with unfiltered  mlim=19.1 (180s expositions);\n2018-06-27 03:34:57-03:53:20 with mlim=19.7 on summary expositions (5sigma, exp=540s).\nThe observations started on zenit distance = 41 degrees.  The sun  altitude  was -17.66 degree.\n\nMASTER-SAAO  robotic telescope located in South Africa started Fermi \ninspection  5834 sec after notice time and 37433 sec after trigger time at  2018-06-26 19:51:28 UT.\nThe 5-sigma upper limit on our second (180s exposure)  set is about 16.2mag.\nThe observations started on zenit distance = 89 degrees, galaxy latitude b = 22 degree.\nThe moon (98 % bright part) is 64 degrees above the horizon. The distance \nbetween  moon and  object is 69. The sun  altitude  was -52.2 degree.\n\n\nMASTER-Amur robotic telescope, located at BSPU, was pointed to Fermi \ntrigger 551697835 on 2018-06-27 14:09:39UT, and observed till  14:57:32.584UT with mlim=18.0(180s exp)\n\nMASTER-Kislovodsk robotic telescope, located at Kislovodsk Solar Station \nof Pulkovo observatory, started Fermi trigger inspection at 2018-06-27 20:53:26 UT.\nThe 5-sigma upper limit on our first (180s exposure)  set is about 18.8mag .\nThe observations started on zenit distance =  6 degrees, galaxy latitude b = 22 degree.\nThe moon (100 % bright part) is 26 degrees above the horizon. The distance \nbetween  moon and  object is 68 .The sun  altitude  is -22.8 degree.\n\nNew OT, that could be connected with GRB, wasn't found.",
  "circularId": 22874,
  "createdOn": 1530375511000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 180626C / Fermi trigger 551697835: MASTER inspection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 180626C"
}