[vsnet-grb-info 13694] GRB 130702A : Xinglong TNT continue optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15009
SUBJECT: GRB 130702A : Xinglong TNT continue optical observation 
DATE:    13/07/18 09:16:10 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 continue to observe the optical counterpart of the Fermi GRB 130702A 
( Singer et al. GCN 14967; Collazzi et al. GCN 14972 ) 
with Xinglong TNT telescope at  13:42:16.031 UT on 16 July, 2013 
under a bad weather.  6*300 sec  R-band images were obtained. 
The brightness of the optical afterglow was found with a magnitude 
of  R~19.6 +/-0.2 mag,  calibrated by USNO-B 1.0 R2 mag of the two stars
 (Schulze et al. GCN 14978; Pozanenko et al. GCN 15003),  
at the mean time of 14.57 days after the burst.