[vsnet-grb-info 7047] GRB 081203B: Gemini observations
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Sun Dec 7 21:11:04 JST 2008
TITLE: GCN CIRCULAR
NUMBER: 8631
SUBJECT: GRB 081203B: Gemini observations
DATE: 08/12/07 12:10:52 GMT
FROM: Daniel Perley at U.C. Berkeley <dperley at 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.
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