{
  "bibcode": "2015GCN.18455....1B",
  "body": "Nat Butler (ASU), Neil Gehrels (GSFC), V. Zach Golkhou (ASU), Alexander\nKutyrev (GSFC), William H. Lee (UNAM), Eleonora Troja (GSFC), Alan M.\nWatson (UNAM) report:\n\nWe observed 26 nearby galaxies (D<10 Mpc) within the GWGC catalog (White,\net al. 2011) and also contained with the LIGO/Virgo G194575 1-sigma\nconfidence interval (Singer, et al. GCN 18442) between RA 23.1 hours and RA\n1.5 hours (J2000) with the Reionization and Transients Infrared Camera\n(RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the\nObservatorio Astron��mico Nacional on Sierra San Pedro M��rtir on the night\nof 2015/10/23.\n\nWe obtained a total exposure of 8 minutes on each field, reaching typical\ndepths of r and i = 21 mag, and z = 17 mag (10-sigma).  These magnitudes\nare in the AB system and are not corrected for Galactic extinction.  Each\nfield, centered upon one GWGC galaxy, has a size of approximately 5 by 5\narcmin^2.  Analysis is ongoing.\n\nWe thank the staff of the Observatorio Astron��mico Nacional in San Pedro\nM��rtir.\n\nContinued observations are planned.\n\n[GCN OPS NOTE(27oct15):  The Trigger number was changed from \"G19457\"\nto \"G194575\" in the Subject-line and the first paragraph.]\n\n[GCN OPS NOTE(27oct15):  This is a duplicate of LVC Circ 18453.]",
  "circularId": 18455,
  "createdOn": 1445626735000,
  "email": "natbutler@asu.edu",
  "eventId": "LIGO/Virgo G194575",
  "subject": "LIGO/Virgo G194575: RATIR Observations of Nearby Galaxies in the 1sigma Error Region",
  "submitter": "Nat Butler at Az State U  <natbutler@asu.edu>"
}