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GCN Circular 15511

GRB 131122A: Nanshan optical upper limit
2013-11-22T23:13:04Z (10 years ago)
Dong Xu at DARK/NBI <>
D. Xu (DARK/NBI), G.-J. Feng, X. Zhang, A. Esamdin, L. Ma (XAO) report:

We observed the IBIS/ISGRI field of GRB 131122A (Gotz et al., GCN
15510) using the 1m telescope located on Mt. Nanshan, Xinjiang, China.
We obtained 6x360s R-band frames at a mean time of 22:28:18 UT on
2013-11-22, i.e., 1.055 hr after the INTEGRAL trigger.

Visual inspect of the Intergral 1.6 arcmin error circle against DSS II
and SDSS shows that no new optical source is detected down to a
limiting magnitude of R=20.6 mag.
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