{
  "bibcode": "2014GCN.17092....1D",
  "body": "S. Dichiara and C. Guidorzi (U. Ferrara) on behalf of\na large collaboration report:\n\nThe Las Cumbres Observatory 2-m Faulkes Telescope North in\nHawaii re-observed Swift GRB 141121A (Lien et al. GCN\nCirc 17075) on November 23 at 10:43:39 UT, i.e. ~2.29 days\nafter the BAT trigger, with the r' and i' filters.\n\nWe confirm the rebrightening of the optical afterglow\nreported by RATIR (Watson et al. GCN 17090) with the\nfollowing magnitudes:\n\nMid time from  Total Exp   Filter    Magnitude\ntrigger (days)  (s)\n-------------------------------------------------\n2.31           120x10       r'        20.61 +- 0.04\n2.29           120x10       i'        20.34 +- 0.05\n-------------------------------------------------\n\nMagnitudes are calibrated against nearby SDSS stars.\nObservations are going on.",
  "circularId": 17092,
  "createdOn": 1416823123000,
  "email": "guidorzi@fe.infn.it",
  "subject": "GRB 141121A: LCO-FTN rebrightening confirmation",
  "submitter": "Cristiano Guidorzi at Ferrara U,Italy  <guidorzi@fe.infn.it>",
  "eventId": "GRB 141121A"
}