{
  "bibcode": "2008GCN..7626....1G",
  "body": "A. Gomboc (Ljubljana), C. Guidorzi (U. Bicocca/INAF-OAB), A. Melandri, \nI.A. Steele, C.G. Mundell, D.F. Bersier, M.F. Bode, M.J. Burgdorf, S.N. Fraser,\nS. Kobayashi, C.J. Mottram, R.J. Smith (Liverpool JMU), P. O'Brien, N.\nBannister, N. Tanvir (U. Leicester) report on behalf of larger GRB \ncollaboration:\n\nThe 2-m Faulkes Telescope South observed the field of GRB 080413B\n(trigger=309111, Stamatikos et al. GCN 7598) starting 8.7-hr after the \ntrigger time.\nWe detect the optical afterglow (Stamatikos et al. GCN 7598, Kruehler et al.\nGCN 7599, Antonelli et al. GCN 7600) and measure the following magnitudes:\n\nFilter   T_mid(hr)    Exposure(s)       Mag\n----------------------------------------------------------------------\nR          8.74          30          19.00 +/- 0.15\nI          8.90         640          18.91 +/- 0.05\nI          9.20        1080          19.15 +/- 0.05\nI          9.54        1080          19.22 +/- 0.06\n----------------------------------------------------------------------\n\nMagnitudes were calibrated with respect to USNOB1 R2 and I.",
  "circularId": 7626,
  "createdOn": 1208368114000,
  "email": "ag@astro.livjm.ac.uk",
  "subject": "GRB 080413B: Faulkes Telescope South optical afterglow observations",
  "submitter": "Andreja Gomboc at LT,ARI,Liverpool JMU  <ag@astro.livjm.ac.uk>",
  "eventId": "GRB 080413B"
}