{
  "bibcode": "2014GCN.17023....1T",
  "body": "A. Trotter, J. Haislip, D. Reichart, A. Aji, R. Beauchemin, T. Berger, \nA. Dow, A. Foster, N. Frank, M. Hinckle, K. Ivarsen, A. LaCluyze, M. \nMaples, J. Moore, M. Nysewander, C. Salemi, L. Zbinden, and J. A. Crain \nreport:\n\nSkynet observed the Swift BAT/XRT localization of GRB 141022A (Vargas et \nal., GCN 16938, Swift trigger=616061) with one 24\" telescope (PROMPT 8; \nI band) and two 16\" telescopes (PROMPT 1,5; V,I bands) of the PROMPT \narray at CTIO, Chile.\nStarting at 2014-10-22 01:29:40 UT and continuing until 02:50 UT \n(t=2m-83m post-trigger), Skynet took a total of 126 exposures ranging \nfrom 10s-160s each. We stacked subsets of these images to maximize the \nS/N ratio, and detected no optical source in either band at the OT \nposition reported by GROND (Kann et al., GCN 16939). Our 3-sigma \nlimiting magnitudes are:\n\n==================================\ntmid  scope   expos  fil  limit\n==================================\n50m  PROMPT1  25x160s V   >21.2\n50m  PROMPT5  24x160s I   >20.6\n45m  PROMPT8  46x80s  I   >20.3\n==================================\n\nMagnitudes are in the Vega System, calibrated to 3 APASS stars in the \nfield.  Magnitudes have not been corrected for line-of-sight Milky Way \ndust extinction, with expected E(B-V)=0.09 (Schlafly & Finkbeiner 2011).\n\nNo further Skynet observations are scheduled.",
  "circularId": 17023,
  "createdOn": 1415021099000,
  "email": "atrotter@physics.unc.edu",
  "subject": "GRB 141022A: Skynet PROMPT-CTIO Observations",
  "submitter": "Adam S. Trotter at UNC-Chapel Hill/PROMPT/Skynet  <atrotter@physics.unc.edu>",
  "eventId": "GRB 141022A"
}