{
  "bibcode": "2017GCN.21757....1B",
  "body": "Nat Butler (ASU), Alan M. Watson (UNAM), V. Zach Golkhou (University of\nWashington), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Eleonora\nTroja (GSFC), and Carlos Rom��n-Z����iga (UNAM) report:\n\nWe observed the field of Swift UVOT source (Emery et al., GCN 21733) with\nthe Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on\nthe 1.5m Harold Johnson Telescope at the Observatorio Astron��mico Nacional\non Sierra San Pedro M��rtir from 2017/08 29.24 to 2017/08 29.50 UTC (4 days\nafter GW trigger G299232), obtaining a total 1.8 hours exposure in the g\nand r bands, 3.7 hours exposure in the i band, and 1.6 hours exposure in\nthe Z, Y, J, and H bands.\n\nFor a source within the UVOT error circle, in comparison with the SDSS DR9\nand 2MASS catalogs, we obtain the following upper limits (3-sigma):\n\n g > 24.32\n r > 24.09\n i > 24.35\n Z > 23.07\n Y > 22.77\n J > 22.41\n H > 22.04\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": 21757,
  "createdOn": 1504043013000,
  "email": "natbutler@asu.edu",
  "subject": "LIGO/Virgo G299232 : RATIR Optical and NIR Observations of Swift UVOT source",
  "submitter": "Nat Butler at Az State U  <natbutler@asu.edu>",
  "eventId": "LIGO/Virgo G299232"
}