[vsnet-grb-info 11270] GRB 111215A : Xinglong TNT upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  12682
SUBJECT: GRB 111215A : Xinglong TNT upper limit  
DATE:    11/12/15 15:38:37 GMT
FROM:    L.P. Xin at NAOC  <xlp at bao.ac.cn>

L.P. Xin,  J.Y. Wei, Y. L. Qiu,  J. Wang, J.S. Deng, 
C. Wu, X. H. Han on behalf of EAFON report:

We began to observe GRB 111215A ( Oates  et al., GCN 12681)
with Xinglong TNT telescope at 14:20:23  (UT), about 16.25 min  after 
the burst.  30 R-band images  were obtained. The exposure time is 60 sec 
for each frame.

No new source was detected in the combined R band image within 
the errorbox of XRT position. The upper limit was estimated 
to be about 18.0  mag derived from USNO B1.0 R2 mag,
at the mean time of 32.75 min after the burst. 

This message may be cited.

For more information about Xinglong GRBs Follow-up
observations, please visit the website:
http://www.xinglong-naoc.org:8080/grb/index.html"