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GCN Circular 13537

GRB 120729A: Xinglong TNT optical upper limit
2012-07-29T17:51:13Z (12 years ago)
L.P. Xin at NAOC <>
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 120729A (Ukwatta et al. GCN Circ. 13530 ) 
with Xinglong TNT telescope at 15:23:22.671 (UT), 4.45 hour after 
the burst. A series of R-band images were obtained. 
Preliminary analysis shows that no any source was found 
at the location of optical counterpart (Ukwatta et al. GCN Circ. 13530;
Virgili et al. GCN 13531), down to 3 sigma upper limit of R~19.5 mag,
relatively to the USNO B1.0 R2 mag, at the mean time of 4.8 hour after
the burst.

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Thanks to the help of TNT observation assistant for this work. 

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