{
  "bibcode": "2007GCN..6717....1S",
  "body": "M. Schubel, C. Weaver, T. Brennan, J. Styblova, J. Haislip, D. Reichart, M. \nNysewander, A. LaCluyze, K. Ivarsen, J. A. Crain, A. Foster, and A. Trotter \nreport:\n\nSkynet observed the localization of GRB 061121A (Page et al., GCN 5823) \nwith two of the 16\" PROMPT telescopes at CTIO beginning 14.5 hours after \nthe burst in r'i'z'.\n\nWe do not detect the afterglow (Page et al., GCN 5823) to 3-sigma limiting \nmagnitudes of r' = 17.2 mag at a mean time of 14.7 hours after the burst \n(10 x 80 sec, calibrated to 13 stars), i' = 19.2 mag at a mean time of 16.3 \nhours after the burst (75 x 80 sec, calibrated to 14 stars), and z' = 18.6 \n(65 x 80 sec, calibrated to 21 stars) at a mean time of 16.4 hours after \nthe burst.\n\nLimiting magnitudes are calibrated to USNO B1.0 and NOMAD stars using the \ntransformation equations of Smith et al. 2002, AJ, 123, 2121.",
  "circularId": 6717,
  "createdOn": 1186581373000,
  "email": "mschubel@physics.unc.edu",
  "subject": "GRB061121A: PROMPT Observations",
  "submitter": "Mark Schubel at UNC/PROMPT  <mschubel@physics.unc.edu>",
  "eventId": "GRB 061121A"
}