[vsnet-grb-info 13675] GRB 130702A: Xinglong TNT optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14992
SUBJECT: GRB 130702A: Xinglong TNT optical observation
DATE:    13/07/07 14:51:36 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 the optical counterpart of the Fermi GRB 130702A 
( Singer et al. GCN 14967; Collazzi et al. GCN 14972 ) 
with Xinglong TNT telescope between 14:10:35  and 15:37:22 UT 
on 5 June, 2013.  15*300 sec  R-band images were obtained. 
The optical counterpart was found with a magnitude of  R~19.7 mag, 
calibrated by USNO-B 1.0 R2 mag, at the mean time of 3.62 days after the burst.