{
  "subject": "Swift Trigger 704327: MASTER syncronous optical observations",
  "bibcode": "2016GCN.19704....1G",
  "createdOn": 1468497323000,
  "circularId": 19704,
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "email": "lipunov@xray.sai.msu.ru",
  "body": "E.S. Gorbovskoy,  V. Lipunov,   N.Tyurina, V.Kornilov,\nP.Balanutsa,  A.Kuznetsov, D.Kuvshinov,\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nD.Buckley, S. Potter, A.Kniazev, M.Kotze\nSouth African Astronomical Observatory\n\nO.Gres, K.Ivanov, S.Yazev, N.M.Budnev, O.Chuvalaev, V.A.Poleshchuk\nIrkutsk State University\n\nA. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Senik\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Yurkov, Yu.Sergienko, A.Gabovich, E.Sinyakov\nBlagoveschensk Educational State University, Blagoveschensk\n\nRicardo Podesta, Carlos Lopez and Federico Podest\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nHugo Levato and Carlos Saffe\nInstituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)\n\n\nMASTER II  robotic telescope (MASTER-Net: http://observ.pereplet.ru) \nlocated in IAC was pointed to the possible GRB (Swift Trigger 704327, \nSbarufatti et al.,  GCN 19700)  25 sec after notice time and 71 sec after \ntrigger time at 2016-07-14 05:22:17 UT at two polarizations in a morning \ntwinlight (sun altitude -11 d). The 5-sigma upper limit has been about \n16.0 mag on first single  (10 sec exposure) and  17.8 mag on coadd (290 \nsec exposure) images. Not very deep upper limits are explained by the \nobservation in the twilight.\n\nWe marginaly seen possible OT first images at 2 sigma level.\n\nRa   =  18 10 27.49\nDec =  +72 03 50.6\nMag =  16.0 +- 0.5\n\n\nMASTER-IAC wide field camera  continiously observed Swift BAT error box \nbefore, during and after thigger with 5 sec unfiltered exposition. The \n5-sigma upper limit has been about 10.5 on each 5 second exposure image. \nWe haven`t found optical transient  within Swift BAT error-box on this \nimages.\n\nThe message may be cited."
}