GCN Circular 25524
Subject
GRB 190828B: Dabancheng-0.5m optical upper limit
Date
2019-08-28T16:31:06Z (5 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
B.Y. Yu, X. Liu, D. Xu, Z.P. Zhu (NAOC), J.H. Liu (XAO), X. Gao (Urumqi
No.1 Senior High School), Z.B. Zhang (XJTS) report:
We observed the field of GRB 190828B (Dichiara et al., GCN 25517) using
the Half-Meter Telescope (HMT-0.5m) located at Dabancheng, Xinjiang,
China. We obtained 5x60 s unfiltered frames, started at 13:56:32 UT on
2019-08-28, i.e., 56.5 min after the burst.
No optical source is detected at the XRT position (Dichiara et al.,
GCN25517) in our stacked image, down to a limiting magnitude of R~17.8,
calibrated with the nearby SDSS field.