{
  "bibcode": "2006GCN..4475....1B",
  "body": "J. S. Bloom (UC Berkeley), D. Walther, C. Trujillo (Gemini), J. X.  \nProchaska (UCO/Lick), R. Foley (UC Berkeley), and H.-W. Chen  \n(Chicago) report:\n\n\"Using the GMOS instrument on Gemini North, we observed the field of  \nGRB 060108 (Sakamoto et al.; GCN 4445) in z-band for 1080 sec. By  \ncomparison with the SDSS pre-imaging (Cool et al. 4448), we place an  \napproximate 5 sigma upper limit of any afterglow flux of z = 24.2 AB  \nmag at the position of the X-ray transient (Page et al. 4453). There  \nis a faint enhancement (~1 sigma) at the XRT position but we cannot  \nverify that it is indeed a real source. Further analysis of the IR  \nimaging is on-going.\"\n\nA comparison chart (North up, East left) may be found at:\n   http://astro.berkeley.edu/~jbloom/grb060108.ps\n\nThis message may be cited.",
  "circularId": 4475,
  "createdOn": 1136931510000,
  "email": "jbloom@astron.berkeley.edu",
  "subject": "GRB 060108: z-band imaging from Gemini-North",
  "submitter": "Josh Bloom at UC Berkeley  <jbloom@astron.berkeley.edu>",
  "eventId": "GRB 060108"
}