{
  "bibcode": "2018GCN.22865....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 180626A (Evans, et al., GCN Circ. 22850)\nwith 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 2018/06 27.16 to\n2018/06 27.20 UTC (19.60 to 20.46 hours after the BAT trigger),\nobtaining a total of 0.71 hours exposure in the r and i bands.\n\nFor a source at the position of the UVOT counterpart, in comparison with\nthe SDSS DR9 catalog, we obtain the following detections:\n\n  r\t= 22.39 +/- 0.20\n  i\t= 21.92 +/- 0.15\n\nThese magnitudes are in the AB system and are not corrected for Galactic\nextinction in the direction of the GRB.\n\nThe source flux has faded approximately as t^-0.35 since our previous\nobservations (Troja et al., GCN Circ. 22855).\n\nWe thank the staff of the Observatorio Astron��mico Nacional in San Pedro\nM��rtir.",
  "circularId": 22865,
  "createdOn": 1530076317000,
  "email": "alan@astro.unam.mx",
  "subject": "GRB 180626A: RATIR Optical Observations",
  "submitter": "Alan M. Watson at Instituto de Astronomia UNAM  <alan@astro.unam.mx>",
  "eventId": "GRB 180626A"
}