{
  "bibcode": "2010GCN.10341....1C",
  "body": "A. Cucchiara, D. B. Fox (PSU), E. Berger, R. Chornok (Harvard),\nA. Fruchter, J. Graham (STScI) report on a larger collaboration:\n\n\n\"We observed the location of the short GRB 100117A (GCN 10336) with\nGMOS on the Gemini-North 8-m telescope starting on 2010 Jan 18.208 UT\n(7.9 hours after the burst).  In a 2700 sec stacked r-band image with\na seeing of about 1\" we detect the same four objects within the XRT\nerror circle (GCN 10336) found in archival CFHT images by Cenko et\nal. and listed in GCN 10339 (see also GCN 10340).  As in the\nMagellan/IMACS image (GCN 10340) all four objects appear to be\nextended in the Gemini-North/GMOS data, indicating that one of them\nmay represent the GRB host galaxy.  No new sources appear to be\npresent within the XRT error circle, with a 3-sigma limiting magnitude\nof approximately r=26.5.\"",
  "circularId": 10341,
  "createdOn": 1263799874000,
  "email": "cucchiara@astro.psu.edu",
  "subject": "GRB 100117A: Gemini-North upper limit",
  "submitter": "Antonino Cucchiara at PSU  <cucchiara@astro.psu.edu>",
  "eventId": "GRB 100117A"
}