{
  "bibcode": "2006GCN..5020....1L",
  "body": "V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy,\nA.Krylov, G.Borisov, A.Sankovich, N.Shatskiy, V.Vladimirov\nS.Korobkin, P.Gritsyk\n\nSternberg Astronomical Institute, Moscow Union 'Optic'\nMASTER  robotic system (http://observ.pereplet.ru) responded to \nGRB060427.4 (GRB_TIME is 2006-04-27 09:04:33.53, V. Mangano, S. D. \nBarthelmy et al.(GCN5006).\nThe first image was at 2006-04-27 18:18:07 UT, 09:13:33.47  after the GRB time\nThe unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B).\nThe robot not find OT-candidate in error box (V. Mangano et al. GCN5010) \nbrighter then  17.5 (s/n=3).\nThis work is supported by RFFI  04-02-16411 grant.\nThis message can be cited.\nMailto: lipunov@sai.msu.ru",
  "circularId": 5020,
  "createdOn": 1146229412000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB060427:MASTER optical limit",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 060427"
}