GCN Circular 26772
Subject
GRB 200115A: Nanshan-0.6m optical upper limit
Date
2020-01-15T12:56:33Z (5 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
Z.P. Zhu, D. Xu, X. Liu, B.Y. Yu, Y. Ma (NAOC), X. Gao (Urumqi No.1
Senior High School) report:
We observed the field of GRB 200115A (Cenko et al., GCN 26771) using the
0.6m NEXT telescope located at Nanshan, Xinjiang, China. Observations
started at 12:11:17 UT on 2020-01-15 (i.e., 20.9 min after the BAT
trigger), and a series of 300 s R-band frames have been obtained.
Observations are ongoing.
No optical transient is detected in the Swift BAT's error circle from
initial frames, down to a limiting magnitude of m(R) ~ 20.0, calibrated
with the nearby SDSS field.