{
  "circularId": 15752,
  "submitter": "Nat Butler at Az State U  <natbutler@asu.edu>",
  "eventId": "GRB 140118A",
  "bibcode": "2014GCN.15752....1B",
  "body": "Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William\nH. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB),\nJ. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara\n(ORAU/GSFC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico\nRamirez-Ruiz (UCSC), José A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús\nGonzález (UNAM), Carlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), and\nHarvey Moseley (GSFC) report:\n\nWe observed the field of GRB 140118A (Krimm, et al., GCN 15748) with the\nReionization and Transients Infrared Camera (RATIR; www.ratir.org) on the\n1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on\nSierra San Pedro Mártir from 2014/01 18.09 to 2014/01 18.10 UTC (39.6 to\n53.4 minute after the BAT trigger), obtaining a total of 7.8 minutes\nexposure in the r and i bands and 4.2 minutes exposure in the Z, Y, and J\nbands through high airmass.\n\nWe detect no new, uncatalogued sources in the refined Swift BAT error box\n(Lien et al., GCN 15750).  In comparison with 2MASS, we obtain the\nfollowing 3-sigma upper limits:\n\n  r     > 19.93\n  i     > 19.37\n  Z     > 19.06\n  Y     > 18.99\n  J     > 18.32\n\nThese magnitudes are in the AB system and are not corrected for Galactic\nextinction in the direction of the GRB.\n\nWe thank the staff of the Observatorio Astronómico Nacional in San Pedro\nMártir.",
  "version": 2,
  "editedBy": "Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>",
  "format": "text/plain",
  "email": "natbutler@asu.edu",
  "createdOn": 1390060138000,
  "subject": "GRB 140118A: RATIR Optical and NIR Observations",
  "editedOn": 1731008327068
}