{
  "bibcode": "2008GCN..7526....1G",
  "body": "C. Guidorzi (INAF-OAB),, A. Gomboc (U. Ljubljana), D. Bersier, C.G. \nMundell, I.A. Steele, R.J. Smith, D. Carter, S. Kobayashi, M. Bode \n(Liverpool JMU), P. O'Brien, N. Bannister, N. Tanvir (U. Leicester) \nreport:\n\nThe 2-m Faulkes North Telescope (Hawaii) automatically reacted to the\nSwift burst GRB080328 (trigger=307931, Perri et al. GCN 7525).\n\nObservations started about 167 s after the trigger time. We confirm\nthe detection of the optical counterpart by UVOT.\n\nFrom the first 3x10 s exposure frames in R, we estimate a temporal\ndecay index between 167 and 240 s after the trigger time of\nalpha = 1.4 +/- 0.2.\n\nFilter  Tstart(s)  Exposure(s)    Mag\n-----------------------------------------------\n    R       167           10      16.96 +/- 0.02\n    R       198           10      17.26 +/- 0.02\n    R       230           10      17.44 +/- 0.02\n-----------------------------------------------\n\nMagnitudes are calibrated with respect to USNOB1 R2 in the R filter.\nA systematic error on absolute magnitudes of ~0.3 must be included.",
  "circularId": 7526,
  "createdOn": 1206697151000,
  "email": "cristiano.guidorzi@brera.inaf.it",
  "subject": "GRB080328: Faulkes Telescope North observations",
  "submitter": "Cristiano Guidorzi at INAF-OAB  <cristiano.guidorzi@brera.inaf.it>",
  "eventId": "GRB 080328"
}