GCN Circular 16320
Subject
GRB 140521A : Xinglong TNT upper limit
Date
2014-05-23T07:50:38Z (10 years ago)
From
L.P. Xin at NAOC <xlp@bao.ac.cn>
L. P. Xin, X. F. Wang, J. Y. Wei, Y. L. Qiu, J. S. Deng,
J. Wang, X. H. Han and C. Wu on behalf of EAFON report:
We began to observe GRB 140521A (Troja et al., GCN 16311)
with Xinglong 0.8-m TNT telescope at 15:35:50 (UT) ,
92 sec after the burst.
No any optical transient was detected in our single or stacked image.
The 3-sigma upper limit magnitude is about 18.4 mag at the mean time of
7.3 min , calibrated by nearby USNO B1.0 R2 mag.
The message may be cited.