{
  "bibcode": "2012GCN.13792....1L",
  "body": "H. Levato and C. Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\nC. Mallamaci, C. Lopez and F. Podest\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nE. Gorbovskoy, V. Lipunov,  V. Kornilov, D. Denisenko, A. Kuznetsov,\nD. Kuvshinov, A. Belinski, N. Tyurina, N. Shatskiy, P. Balanutsa, D. Zimnukhov,\nV.V. Chazov\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V. Sennik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nK. Ivanov, S. Yazev, N.M. Budnev, O. Gres, O. Chuvalaev, V.A. Poleshchuk\nIrkutsk State University\n\nV. Yurkov, Yu. Sergienko, D. Varda, E. Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nV. Krushinski, I. Zalozhnich,  A. Popov, A. Bourdanov\nUral Federal University\n\n\nMASTER-ICATE robotic Very Wide Field Cameras (FOV=2x384 square degrees,\nD=72mm, f/1.2, 1 pix = 22 arcsec, http://observ.pereplet.ru) located in\nArgentina (Observatorio Astronomico Felix Aguilar,\nhttp://93.180.27.230:8080/) were pointed to the GRB120919B by FERMI \n369710066 trigger   30 s after notice time and 55 s after GRB time at \n2012-09-19 01:15:18 UT.\nWe cover full IPN-triangulations error-box (K. Hurley et. al. GCN13788)\nWe haven`t found  optical transient  within IPN-triangulations error-box\n   our first (5 s exposure) set and on coadd image with complete exposure\nof 45 seconds durnig gamma-burst activity (Golenetskii et al., GCN 13789).\n\nThe 5-sigma upper limit on single image has  been about 11.7 mag and 12.5 \nmag on coadded image.\n\nAlso, we are marginaly see ~2 sigma OT at position Ra 20:10:26.40 Dec \n+37:31:48.00 with magnitude 12.5+-0.5m .\n\nThe coverage map and OT image available here \nhttp://master.sai.msu.ru/static/GRB/GRB120919B_2x2deg.png\n\nOur cameras are continuously imaging the sky with 5 sec exposures.\n\nThis message can be cited.",
  "circularId": 13792,
  "createdOn": 1348235640000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 120919B: MASTER prompt optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 120919B"
}