GCN Circular 17339
Subject
GRB150120B: Xinglong TNT optical observation
Event
Date
2015-01-21T14:07:31Z (12 years ago)
From
L.P. Xin at NAOC <xlp@bao.ac.cn>
L. P. Xin, X. F. Wang, 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 150120B (D'Elia et al., GCN 17314)
with Xinglong 0.8-m TNT telescope at 2015-01-20, 10:56:50 (UT),
about 3.58 hours after the burst.
In the 15*300sec coadded R-bamd image, the optical counterpart
(D. A. Perley GCN 17315; Guidorzi et al., GCN 17316; Wiseman et al., 17336;
Pandey GCN 17337) was detected with a brightness of
R=21.3+/-0.2 mag at the mid-time of 4.2 hours after the burst,
calibrated by the nearby USNO B1.0 R2 mag.
The message may be cited.