{
  "bibcode": "2014GCN.16102....1K",
  "body": "Klotz A., Turpin D. (IRAP-CNRS-OMP),\nBoer M., Gendre B., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA),\nAtteia J.L. (IRAP-CNRS-OMP) report:\n\nWe imaged the field of GRB 140413A detected by SWIFT\n(trigger 595616) with the TAROT robotic telescope (D=25cm)\nlocated at the European Southern Observatory,\nLa Silla observatory, Chile.\n\nThe observations started 92.3s after the GRB trigger\n(16.4s after the notice) probably during the end of\nthe prompt gamma emission regarding the BAT light curve.\nThe elevation of the field decreased from 36 degrees\nabove horizon and weather conditions were good.\n\nThe first image is trailed with a duration of 60.0s\n(see the description in Klotz et al., 2006, A&A 451, L39).\nWe do not detect the GROND OT candidate (Varela et al.\nGCNC 16099) with a limiting magnitude of:\nt0+92.3s to t0+152.3s : Rlim = 17.0\n\nThe second image is 30.0s exposure in tracking mode:\nt0+165.6s to t0+195.6s : Rlim = 17.6\n\nWe co-added series of exposures:\nt0+165.6s to t0+457.5s : Rlim = 19.3\nt0+468.3s to t0+ 1362s : Rlim = 19.3\n\nMagnitudes were estimated with the nearby USNO-B1 stars\nand are not corrected for galactic dust extinction.",
  "circularId": 16102,
  "createdOn": 1397385801000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 140413A: TAROT La Silla observatory optical observations",
  "submitter": "Alain Klotz at IRAP-CNRS-OMP  <Alain.Klotz@free.fr>",
  "eventId": "GRB 140413A"
}