GCN Circular 13501
Subject
GRB 120722A: Correction for GCN circ.13500
Date
2012-07-22T16:43:59Z (12 years ago)
From
L.P. Xin at NAOC <xlp@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 apologize for the wrong result reported in GCN circ. 13500 .
Caused by a wrong astronomical calibration,
the optical candidate of GRB 120722A reported in GCN circ. 13500
should be a known object in the USNO B1.0
Therefore, no any new source within the location of
XRT counterpart was detected by TNT. The 3 sigma upper limit
of 21 mag was derived relatively to USNO B1.0 R2 mag.