[vsnet-grb-info 4010] GRB061121: Keck spectroscopic observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  5825
SUBJECT: GRB061121: Keck spectroscopic observations
DATE:    06/11/21 15:47:09 GMT
FROM:    Daniel Perley at U.C. Berkeley  <dperley at astro.berkeley.edu>

D. A. Perley and J. S. Bloom report,

On the night of 21 November 2006 (UT), we began spectroscopic 
observations of GRB061121 at 15:35 UT using Keck I (+LRIS).  The optical 
afterglow is visible in the finder camera in early twilight and is 
detected in 120-second spectroscopic exposures down to the atmospheric 
cutoff.  Strong absorption features are observed.  Observations are 
continuing.