{
  "bibcode": "2007GCN..6617....1M",
  "body": "A. Meshcheryakov, R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), \nI. Khamitov, Z. Tunca (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.),\nI. Bikmaev, and N. Sakhibullin (KSU/AST) report:\n\nWe observed the field of GRB 070704 (Sakamoto et al., GCN 6594) with\nRussian-Turkish 1.5-m telescope (RTT150, Bakyrlytepe,TUBITAK National\nObservatory, Turkey). The observations consisted of a series 30-second\nexposures in g',r',i' filters, until ~1h after the burst time we\ncontinue only r'-filter exposures. The first exposure in g' started at\n20:15:13.9UT, i.e.556 s after the BAT trigger. The observations were\nfinished ~1.5 hour after the burst time.\n\nIn 30-second images as well as in combined images we do not detect any\nnew object at the revised XRT position (Godet & Sakamoto, GCN 6598) down\nto following limiting magnitudes:\n\nFilter  T_start(sec after trigger) Exp(s)  Lim    \n----------------------------------------------------------------------------\n  g'     556                       30      20.1    first\n                                  240      21.2    combined\n  r'     641                       30      20.1    first\n                                 1720      22.3    combined\n  i'     721                       30      20.3    first\n                                  180      21.3    combined\n\nThis message may be cited.\n\n[GCN OPS NOTE(12jul07): Per author's request, IK was added to the author list,\nand the extra period after 'filter' in the 4th line was removed.]",
  "circularId": 6617,
  "createdOn": 1184149298000,
  "email": "gardel@hea.iki.rssi.ru",
  "subject": "GRB 070704: RTT150 optical observations",
  "submitter": "Alexander Mescheryakov at IKI RAN  <gardel@hea.iki.rssi.ru>",
  "eventId": "GRB 070704"
}