GCN Circular 23588
Subject
GRB 181228A: Xinglong-2.16m optical upper limit
Date
2018-12-29T13:31:29Z (5 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
Z.P. Zhu, L.P. Xin, D. Xu, J.B. Zhang (NAOC), X. Zhang, J.H. Liu (XAO)
report:
We observed the field of GRB 181228A (Moss et al., GCN 23570) using the
2.16-m telescope located at Xinglong, Hebei, China, equipped with the
BFOSC camera. We obtained 6x300s and 2x600s frames in I-band, starting
at 13:04:00 UT on 2018-12-28, i.e., 10.18 hrs after the BAT trigger.
The afterglow of GRB 181228A (e.g., Moss et al., GCN 23570; D'Avanzo et
al., GCN 23575; Lipunov et al., GCN 23576) is not detected in our
stacked image, down to a limiting magnitude of ~20.5 mag, calibrated
with the nearby PanSTARRS field.