GCN Circular 8631
Subject
GRB 081203B: Gemini observations
Date
2008-12-07T12:10:52Z (15 years ago)
From
Daniel Perley at U.C. Berkeley <dperley@astro.berkeley.edu>
D. A. Perley and J. S. Bloom (UC Berkeley) report:
We triggered Gemini-N (GMOS) observations of BATSS GRB 081203B (Copete
et al., GCN 8600, 8602) starting at 15:04 UT 2008-12-06 through very
high airmass but under good conditions. In our acquisition image we
identify a source at the position of the optical afterglow (Schady et
al., GCN 8606). Photometry, calibrated to SDSS, is:
r = 21.90 +/- 0.06 (t = 3.05 days)
Two spectroscopic integrations of 1200s each were acquired using the
R150 grating. Preliminary inspection of the frames reveals no obvious
line features between 5200-9000 A. Further analysis is continuing.