TITLE: GCN CIRCULAR NUMBER: 7124 SUBJECT: GRB071122: Gemini Absorption redshift DATE: 07/11/22 06:36:13 GMT FROM: Antonino Cucchiara at PSU A. Cucchiara, D. B. Fox (Penn State) and S. B. Cenko (Caltech) on behalf of a large collaboration: Starting on 2007 November 22.19 UT we used the GMOS spectrograph on the Gemini North telescope to obtain two spectra of 900 each of the optical afterglow of GRB071122 (GCN 7121, 7123). The spectrum covers the wavelength range 5900-10000A. We clearly detect absorption features corresponding to MgII doublet, MgI, Ca H&K at a redshift of z=1.14, which we identify as the redshift of the grb.