[vsnet-grb-info 14062] GRB 131024B: Nanshan optical upper limit
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Oct 25 12:27:54 JST 2013
TITLE: GCN CIRCULAR
NUMBER: 15376
SUBJECT: GRB 131024B: Nanshan optical upper limit
DATE: 13/10/25 03:26:23 GMT
FROM: Dong Xu at DARK/NBI <dong.dark at gmail.com>
D. Xu (DARK/NBI), X. Zhang, C-H. Bai, A. Esamdin, L. Ma (XAO) report:
We observed the field of GRB 131024B (Krimm et al., GCN 15371) using the 1m
telescope located on Mt. Nanshan, Xinjiang, China. We obtained 4x300s
R-band frames at a mean time of 2013-10-24 23:21:53 UT, i.e., 1.773 hr
after the BAT trigger.
No optical source is detected within the XRT error circle in the stacked
image down to a limiting magnitude of R=21.0, calibrated with nearby SDSS
field.
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