GCN Circular 29398
Subject
GRB 210205A： GWAC-F60A optical upper limit
Date
2021-02-05T11:50:51Z (3 years ago)
From
Liping Xin at NAOC, SVOM <xlp@nao.cas.cn>
L. P. Xin(NAOC), J. Wang(GXU), C. Gao(GXU), X. H. Han(NAOC), J. Y. Wei(NAOC),
G. W. LI(NAOC), L. H. Li(NAOC), C. Wu(NAOC), X. G. Wang(GXU),
E. W. Liang (GXU), R. S. Zhang(NAOC), Y. L. Qiu(NAOC),
and J. S. Deng(NAOC) report:
We began to observe GRB 210205A (Dichiaraet al., GCN 29397)
with Xinglong GWAC-F60A telescope, China,
at 11:13:26 (UT), 5th. Feb. 2021, about 129 sec after the burst.
A series of R, I, and B band images were obtained.
Preliminary analysis shows that no any new optical source
are found in single images within the XRT errorbox (Dichiaraet al., GCN 29397).
The 3 sigma upper limit is about 17.3 mag in R band
at the mean time of 134 sec after the burst,
calibrated to the USNO B1.0 catalog.