GCN Circular 11640
Paul Vreeswijk (U. Iceland), Paul Groot (Radboud U. Nijmegen), Philip Carter (U. Warwick), Dong Xu (WIS), Annalisa De Cia, P. Jakobsson (U. Iceland) and Johan Fynbo (DARK) report on behalf of a larger collaboration: We have observed the field of GRB 110205A (Beardmore et al., GCN 11629) with the 2.5m NOT telescope at Roque de los Muchachos Observatory (La Palma, Spain) equipped with ALFOSC starting at 3:25 UT (1.4h after the burst). Despite thick clouds, the optical afterglow is clearly detected at R ~ 16.7 (as compared to nearby USNO-B1.0 stars). Preliminary reduction of the subsequent spectroscopic observations shows a clear DLA and several metal absorption lines (OI/OI*, CII/CII*, CIV, AlII, FeII) at a common redshift z=2.22, confirming the redshift measurement by Cenko et al. (GCN 11638).