{
  "bibcode": "2009GCN..8774....1C",
  "body": "A. Cucchiara and D. B. Fox (Penn State) report:\n\n\"Starting on 2009 January 2.24 UT we used the Marcario LRS spectrograph\non the Hobby-Eberly Telescope (R ~ 230) to obtain a 1000s spectrum of\nthe optical afterglow of GRB 090102 (Mangano et al., GCN 8762, Covino\net al., GCN 8763).\nThe spectrum covers the wavelength range 4200 to 10,000 Angstrom.\nUnfortunately the data were taken under bad seeing conditions and the\naverage S/N is ~5.\n\nBased on a preliminary calibration we detect some absorption features which\nwe identify as the MgII doublet (2796,2803) and MgI(2856) at redshift z \n= 1.55.\n\nThis value is consistent with the redshift reported by de Ugarte Postigo \net al.\n(GCN 8766) and Cenko et al. (GCN 8773).\n\nWe thank the HET staff for performing this observation, in particular\nJohn Caldwell.\"",
  "circularId": 8774,
  "createdOn": 1230966838000,
  "email": "cucchiara@astro.psu.edu",
  "subject": "GRB 090102:  Hobby-Eberly Telescope Spectroscopy",
  "submitter": "Antonino Cucchiara at PSU  <cucchiara@astro.psu.edu>",
  "eventId": "GRB 090102"
}