{
  "bibcode": "2015GCN.17488....1K",
  "body": "A. Klotz, D. Turpin (IRAP-CNRS-OMP), D. Macpherson (UWA/ICRAR), D. \nCoward (UWA),\nM. Boer, B. Gendre, K. Siellez, H. Dereli, O. Bardho (UNS-CNRS-OCA),\nA. Williams (PO-UWA), R. Martin (PO-UWA)\nreport:\n\nWe imaged the field of GRB 150222A detected by SWIFT\n(trigger 632180) with the Zadko robotic telescope (D=100cm)\nlocated at the observatory - Gingin, Australia.\n\nThe observations started 55s after the GRB trigger\n(42s after the notice). The elevation of the field increased from\n51 degrees above horizon and weather conditions\nwere very 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 any OT at the XRT position\n(Bernardini et al. GCNC 17486) with a limiting magnitude of:\nt0+55s to t0+115s : Rlim = 18.5\n\nThe second image is 30.0s exposure in tracking mode:\nt0+134s to t0+164s : Rlim = 19.8\n\nWe co-added a series of exposures:\nt0+134s to t0+834s : Rlim = 21.5\n\nMagnitudes were estimated with the nearby NOMAD1 stars\nand are not corrected for galactic dust extinction.",
  "circularId": 17488,
  "createdOn": 1424637124000,
  "email": "Alain.Klotz@free.fr",
  "subject": "GRB 150222A: Zadko observatory - Gingin optical observations",
  "submitter": "Alain Klotz at IRAP-CNRS-OMP  <Alain.Klotz@free.fr>",
  "eventId": "GRB 150222A"
}