[vsnet-grb-info 14111] GRB131030A : xinglong TNT optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15425
SUBJECT: GRB131030A : xinglong TNT optical observation
DATE:    13/11/01 07:29:08 GMT
FROM:    L.P. Xin at NAOC  <xlp at bao.ac.cn>

L. P. Xin,   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 131030A  (Troja et al. GCN 15402) 
with Xinglong 0.8-m TNT telescope at 13:59:04 (UT) , Oct. 31th,
about 17 hours after the burst.  10*300 sec  R-band images were obtained. 

The optical counterpart (Troja et al. GCN 15402)   was clearly detected 
with a magnitude of 19.4+/-0.1 mag in R band, calibrated by USNO B1.0 R2mag 
at the mean time of 17.397h after the burst.

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