{
  "bibcode": "2017GCN.20599....1K",
  "body": "A. Klotz, D. Turpin (IRAP-CNRS-OMP),\nD. Macpherson (UWA/ICRAR), D. Coward (UWA),\nM. Boer, R. Laugier (UNS-CNRS-OCA),\nGendre B. (UVI - Etelman Obs.),\nA. Williams (PO-UWA), R. Martin (PO-UWA)\nreport:\n\nWe continue to image the field of GRB 170202A\nwith the Zadko robotic telescope (D=100cm)\nlocated at the observatory - Gingin, Australia\n(see Klotz et al. GCNC 20580 for early measures).\n\nThe observations started 19.56h after the GRB trigger\nand were stopped at t0+22.99h. We stacked 25 images\nof 180s with no filter.\n\nWe detect the optical transcient described by Racusin et\nal. (GCNC 20575), Xin et al. (GCNC 20576) and Lipunov et\nal. (GCNC 20578). We calibrated magnitudes using the same\nreference star than Xin et al. (GCNC 20576):\n\nt0+19.56h t0+22.99h R=21.8 +/-0.4\n\nMagnitudes are not corrected for galactic dust extinction.",
  "circularId": 20599,
  "createdOn": 1486162688000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 170202A: Zadko observatory - Gingin optical observations",
  "submitter": "Alain Klotz at IRAP-CNRS-OMP  <Alain.Klotz@free.fr>",
  "eventId": "GRB 170202A"
}