{
  "bibcode": "2015GCN.18565....1B",
  "body": "D.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nE. Gorbovskoy, V. Lipunov,    N.Tyurina, V.Kornilov, P.Balanutsa, A.Kuznetsov, \nD.Kuvshinov, D. Vlasenko, E.Popova\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nK.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nV.Krushinski, I.Zalozhnih\nUral Federal University, Kourovka\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nClaudio Mallamaci, Carlos Lopez and Federico Podest\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nMASTER-SAAO  robotic telescope (MASTER-Net: http://observ.pereplet.ru), \nlocated in SAAO, received Swift  GRB 151107A at the sunset, when the Sun \naltitude was -3.4 degrees, GRB altitude was 18.4 degrees.\n\nMASTER-SAAO was pointed to the  GRB151107A 1750 sec after notice time \nand 2141 sec after trigger time at 2015-11-07 17:55:20 UT (Sun Altitude: \n-10.34, Alert altitude: 14.75). On our images (180s exposure)  we haven`t \nfound optical transient  within SWIFT error-box (ra=14 28 33 dec=-59 40 46 \nr=0.05). The 5-sigma upper limit has been about 17.2mag. There is  a \nbright star near the BAT coordinates. GRB is setting.\n\nThe best single image was started at  \t2015-11-07 18:49:45 \t(exp 180) \nm_lim = 18.3 mag.\nThe message may be cited.",
  "circularId": 18565,
  "createdOn": 1446926162000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 151107A: MASTER-NET optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 151107A"
}