{
  "bibcode": "2007GCN..6315....1S",
  "body": "R.J. Smith, C.G. Mundell, S.N. Fraser, I.A. Steele, C.J. Mottram, A. \nMelandri, D.F. Bersier, M.F. Bode (Liverpool JMU), C. Guidorzi \n(Uni-Bicocca/INAF-OAB), A. Gomboc (Ljubljana), P. O'Brien, E. Rol, N. \nBannister (U. Leicester) report on behalf of the RoboNet GRB \ncollaboration\n\nThe 2-m Faulkes North Telescope (Hawaii) reacted to the Swift burst \nGRB070419A\n(Stamatikos et al. GCN 6302). Observations were delayed by scheduled \nengineering\nwork and only started about 37 min after the trigger time. BRi \nobservations continued\nuntil 104min after the trigger.\n\nWe detect the optical transient reported by Chornock et al (GCN 6304) \nin R and i' band filters\nand measure a power law decay index of ~ 1.5 throughout the hour of \nobservation.\n\n  UTC\tminutes_since_trigger\tMag\n10:49:46.5\t50.36\tg' > 19.8 (limit only)\n10:51:20.8\t51.91\tr' = 20.37\n10:53:07.9\t53.70\ti' = 20.22\nMagnitudes are based on comparison with SDSS magnitudes of the adjacent \nstar\nSDSS J121057.55+395539.9.\n\nThe target has set and further observations are not currently ongoing \nwith this telescope.",
  "circularId": 6315,
  "createdOn": 1176997109000,
  "email": "rjs@astro.livjm.ac.uk",
  "subject": "GRB 070419A: Faulkes Telescope North Optical Observations",
  "submitter": "James Smith at ARI,Liverpool John Moors U  <rjs@astro.livjm.ac.uk>",
  "eventId": "GRB 070419A"
}