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GCN Circular 15114

Subject
GRB 130822A: Weihai optical upper limit
Date
2013-08-22T18:32:54Z (11 years ago)
From
Dong Xu at DARK/NBI <dong.dark@gmail.com>
D. Xu (DARK/NBI), D.-Y. Ren, C. Cao, S.-M. Hu (SDU) report:

We observed the field of GRB 130822A (Kocevski et al., GCN 15112)
using the 1m telescope located in Weihai, Shandong, China.
Observations started at 17:05:49 UT on 2013-08-22 (i.e., 1.19 hr after
the BAT trigger) and 3x500s SDSS r'-band frames were obtained in a
cloudy weather.

No optical source is detected within the XRT error circle (Kocevski et
al., GCN 15112) in the stacked image down to r'>~20 mag, calibrated
with SDSS field.
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