{
  "bibcode": "2014GCN.16274....1F",
  "body": "W. Fong (Harvard), R. Chornock (Harvard), D. Fox (PSU), and E. Berger\n(Harvard) report:\n\n\"We observed the location of the long-duration GRB 140515A (D'Avanzo et\nal., GCN 16267) with the Gemini Multi-Object Spectrograph (GMOS) mounted on\nthe Gemini-North 8-meter telescope at a mid-time of 2014 May 15.458 UT\n(1.78 hr after the BAT trigger). We obtained 480 sec in each of the i- and\nz-bands in 0.45\" seeing. We detect the optical afterglow (Chornock et al.,\nGCN 16269), within the enhanced XRT position (Goad et al., GCN 16270),\nlocated at\n\nRA(J2000) = 12:24:15.51\nDec(J2000) = +15:06:16.6\n\nwith a positional uncertainty of 0.1\" in each coordinate. The optical\nafterglow has a brightness of z = 20.27 +/- 0.11 AB mag, and is at least 3\nmag fainter in our i-band observations. Both the astrometry and photometry\nare calibrated to SDSS.\n\nWe thank the Gemini staff for their assistance with these observations.\"",
  "circularId": 16274,
  "createdOn": 1400181983000,
  "email": "wfong@cfa.harvard.edu",
  "subject": "GRB 140515A: Gemini-North imaging",
  "submitter": "Wen-fai Fong at CFA  <wfong@cfa.harvard.edu>",
  "eventId": "GRB 140515A"
}