GCN Circular 11898
Subject
GRB 110407A : Xinglong TNT upper limit
Date
2011-04-07T15:18:55Z (13 years ago)
From
L.P. Xin at NAOC <xlp@bao.ac.cn>
L.P. Xin, Y. Urata, Z. X. Ling, Y.L. Qiu, J.Y. Wei, J. Wang, J.S. Deng,
C. Wu, X. H. Han on behalf of EAFON report:
We began to observe GRB110407A ( Wolf et al., GCN 11894)
with Xinglong TNT telescope at 14:28:05(UT), 21.5min after
the burst, under the dusty and cloudy wheather.
A series of R-band images were obtained.
No any new source was found within the errorbox of X-ray
counterpart ( Wolf et al., GCN 11894 ), down to 3 sigma
upper limit of R ~ 18.3 mag, derived from USNO B1.0 R2 magnitude, at the
mean time of 26 min after the burst
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