{
  "bibcode": "2015GCN.18530....1D",
  "body": "S. Dichiara (U. Ferrara, ICRANet), C. Guidorzi (U. Ferrara), S. \nKobayashi (LJMU), A. Gomboc (U. Ljubljana) on behalf of a larger \ncollaboration report:\n\nThe 2-m LCOGT Faulkes Telescope South began observing Swift GRB 151029A \n(Ukwatta et al. GCN 18522) on October 29, 09:33 UT (1.7 hours after the \nburst trigger) with SDSS R and I filters. We marginally detect the \noptical afterglow (Ukwatta et al. GCN 18522; Knust et al. GCN 18523; \nTanvir et al. GCN 18524) due to poor sky conditions with the following \nmagnitudes:\n\nMid Time      Exposure       Filter       Magnitude\n(hours)           (s)\n-------------------------------------------------------\n1.8            5x120         R           20.6 +- 0.4\n2.0            5x120         I           21.0 +- 0.5\n-------------------------------------------------------\n\nCalibration is done against nearby USNOB-1 star RA(J2000)=02:34:10.069, \nDEC(J2000)=-35:24:13.54, assuming R2=16.95 mag and I=17.63 mag.",
  "circularId": 18530,
  "createdOn": 1446133367000,
  "email": "guidorzi@fe.infn.it",
  "subject": "GRB 151029A: LCOGT-FTS afterglow observations",
  "submitter": "Cristiano Guidorzi at Ferrara U,Italy  <guidorzi@fe.infn.it>",
  "eventId": "GRB 151029A"
}