{
  "bibcode": "2009GCN..9233....1G",
  "body": "E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina,\nD.Kuvshinov, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov\nSternberg Astronomical Institute, Moscow State University\n\nK.Ivanov, S.Yazev\nIrkutsk State University\n\nA. Tlatov, A.V. Parhomenko,\nKislovodsk Solar Station of the Pulkovo Observatory\n\nV.Krushinski, I.Zalognikh, T.Kopytova\nUral State University, Kourovka\n\n\nThere are 6 MASTER Very Wide Field cameras located at Kislovodsk and Irkutsk \nwith common FOW = 6000 square degrees (http://observ.pereplet.ru/).\n\nOne of the two  MASTER Very Wide Field Cameras located at Irkutsk\n(D=50 mm, 2x1000 square degrees, 11 Mpx, 72\" per pix in binning regime) \nhas observed  UVOT error box (Cannizzo et al., GCN 9223) with 1s exposure \nbefoure, during and after GRB Time without time gap between images.\nThe error box is near at the center of our FOW.\n\nOur unfiltered images are calibrated relative to Tycho stars (V).\nThe magnitude limit of the each emage is  ~8 m at the center of FOW (some \ncloudy on the sky). The limit of coadded five images ~ 9 m.\n\nThe reduction is continued.\n\nThe message may be cited.\n\nmailto: lipunov@sai.msu.ru",
  "circularId": 9233,
  "createdOn": 1240606883000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "GRB 090424: MASTER-Net prompt optical observations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 090424"
}