{
  "bibcode": "2018GCN.22537....1W",
  "body": "Alan M. Watson (UNAM), Nat Butler (ASU), Alexander Kutyrev (GSFC),\nWilliam H. Lee (UNAM), Michael G. Richer (UNAM), Ori Fox (STScI), J.\nXavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI),\nEleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz\n(UCSC), Jes��s Gonz��lez (UNAM), Carlos Rom��n-Z����iga (UNAM), Harvey\nMoseley (GSFC), John Capone (UMD), V. Zach Golkhou (U. Wash.), and Vicki\nToy (UMD) report:\n\nWe observed the field of GRB 180325A (Troja et al., GCN 22532) with the\nReionization and Transients Infrared Camera (RATIR; www.ratir.org) on\nthe 1.5m Harold Johnson Telescope at the Observatorio Astron��mico\nNacional on Sierra San Pedro M��rtir from 2018/03 25.12 to 2018/03 25.23\nUTC (1.02 to 3.67 hours after the BAT trigger), obtaining a total of\n1.47 hours exposure in the r and i bands and hours exposure in the Z, Y,\nJ, and H bands.\n\nFor a source within the Swift-XRT error circle, in comparison with the\nSDSS DR9 catalog, we obtain the following detections:\n\n  r\t= 19.79 +/- 0.02\n  i\t= 19.38 +/- 0.01\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 Astron��mico Nacional in San Pedro\nM��rtir.",
  "circularId": 22537,
  "createdOn": 1521957691000,
  "email": "alan@astro.unam.mx",
  "subject": "GRB 180325A: RATIR Optical Observations",
  "submitter": "Alan M. Watson at Instituto de Astronomia UNAM  <alan@astro.unam.mx>",
  "eventId": "GRB 180325A"
}