{
  "bibcode": "2003GCN..2262....1L",
  "body": "V. Lipunov, A.Krylov, V.Kornilov, G.Borisov, D.Kuvshinov, A.Belinski,\nI.Chilingarian, M.Kuznetsov,  S.Potanin, V.Vitrischak, G.Antipov\n\nSternberg Astronomical Institute, Alexsandr Krylov Observatory, Moscow\n\nAfter GRB030601 alert (HETE 2728) MASTER robotic telescope\n(http://observ.pereplet.ru) had automatically pointed to the corresponding\narea of the sky (105 seconds after trigger time). There were clouds near\nthe horizont and they were imaged on the CCD frame. First measurable image\nof the error box area was taken 55 minutes after the burst. No optical\ncounterpart was visible up to 12th magnitude in R band. We had been\nobserving about 90% of the error box area for almost 3 hours. On the last\nimage taken on 21:26UT (3h13m after the burst) no optical counterpart is\nvisible up to 15th magnitude in R band. We had to stop our observations\nbecause of rain with possible thunderstorm.\n\nObservations were made under bad weather conditions (clouds + low altitude\nabove the horizont, 25 degrees at culmination + bright sky because of high\nMoscow's latitude).\n\nThese are preliminary results.\n\nThis message may be cited.",
  "circularId": 2262,
  "createdOn": 1054506304000,
  "email": "gcncirc@observ.inetcomm.ru",
  "subject": "MASTER: optical observation GRB030601",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <gcncirc@observ.inetcomm.ru>",
  "eventId": "GRB 030601"
}