{
  "subject": "GRB 141121A: Continued RATIR Optical Observations",
  "circularId": 17119,
  "body": "Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H.\nLee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J.\nXavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC),\nEleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), José\nA. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM), Carlos\nRomán-Zúñiga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report:\n\nWe observed the field of GRB 141121A (Lien et al., GCN 17075) with the\nReionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m\nHarold Johnson Telescope at the Observatorio Astronómico Nacional on Sierra San\nPedro Mártir from 2014/11 30.28 to 2014/11 30.54 UTC (218.99 to 225.08 hours\nafter the BAT trigger), obtaining a total of 4.98 hours exposure in the r, i and\nz bands.\n\nFor a source within the Swift-XRT error circle, in comparison with the SDSS DR9,\nwe obtain the following detections and upper limits (3-sigma):\n\nr = 22.32 +/- 0.07\ni = 22.14 +/- 0.07\nz > 21.00\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 Mártir.",
  "createdOn": 1417368421000,
  "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>",
  "version": 2,
  "bibcode": "2014GCN.17119....1B",
  "email": "alan@astro.unam.mx",
  "submitter": "Alan M. Watson at Instituto de Astronomia UNAM  <alan@astro.unam.mx>",
  "eventId": "GRB 141121A",
  "format": "text/plain",
  "editedOn": 1731009405689
}