{
  "bibcode": "2011GCN.12759....1D",
  "body": "J. Dittman, T. Laskar, and E. Berger (Harvard) report:\n\n\"Starting on 2011 December 29.312 UT (15.7 hours after the burst) we\nused the Blue Channel spectrograph mounted on the MMT 6.5-m telescope\nto observe GRB111228A (GCN #12737).  Our spectra cover the range\n3400-8500A and reveal absorption lines of MgII and FeII at a common\nredshift of z=0.714, which we consider to be the redshift of\nGRB111228A.  Additional observations are in progress.\"",
  "circularId": 12759,
  "createdOn": 1325146587000,
  "email": "eberger@cfa.harvard.edu",
  "subject": "GRB 111228A: MMT Redshift",
  "submitter": "Edo Berger at Harvard  <eberger@cfa.harvard.edu>",
  "eventId": "GRB 111228A"
}