[vsnet-grb-info 14758] GRB 140402A : Xinglong TNT upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16072
SUBJECT: GRB 140402A : Xinglong TNT upper limit
DATE:    14/04/02 18:10:55 GMT
FROM:    L.P. Xin at NAOC  <xlp at bao.ac.cn>

L. P. Xin,   M. Zhai,  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 140402A  (Bissaldi  et al.,  
GCN 16069;  Peter et al, GCN 16070; Cummings et al., 
GCN 16071)  under  cloudy weather, with Xinglong 
0.8-m TNT telescope at 16:04:37 (UT) , 15.95 hrs after the burst.

No any new source in our 10*300 sec combined images 
down to the upper limit of 19.2 mag in R band, calibrated by 
nearby USNO B1.0 R2 mag.