{
  "subject": "GRB 200215A: RATIR Optical Observations",
  "eventId": "GRB 200215A",
  "bibcode": "2020GCN.27105....1W",
  "createdOn": 1581872232000,
  "circularId": 27105,
  "submitter": "Alan M Watson at UNAM  <alan@astro.unam.mx>",
  "email": "alan@astro.unam.mx",
  "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 200215A (Bernardini et al., GCN Circ.\n27079) with the Reionization and Transients Infrared Camera (RATIR;\nwww.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio\nAstron��mico Nacional on Sierra San Pedro M��rtir from 2020/02 16.11 to\n2020/02 16.23 UTC (11.91 to 14.78 hours after the BAT trigger),\nobtaining a total of 1.79 hours exposure in the r and i bands.\n\nFor a source within the enhanced Swift-XRT error circle (Evans et al.,\nGCN Circ. 27089), in comparison with the SDSS DR9 catalog, we obtain the\nfollowing 3-sigma upper limits:\n\n  r\t> 22.01\n  i\t> 23.15\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."
}