GCN Circular 18485
Subject
GRB 151027A: Weihai optical observations
Date
2015-10-27T12:17:48Z (9 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
D. Xu (NAOC/CAS), C.-M. Zhang, C. Cao, S.-M. Hu (SDU) report:
We observed the field of GRB 151027A (Maselli et al., GCN 18478) using
the 1m telescope located at Weihai, Shandong, China. Observations
started at 09:44 UT on 2015-07-27, i.e., 5.77 hr after the burst. We
obtained 5x300s R-band and 5x150s I-band frames.
The afterglow (e.g., Maselli et al., GCN 18478; Zheng & Filippenko, GCN
18479; Elenin et al., GCN 18480; Perley & Cenko, GCN 18481) is clearly
detected in each image, and it has decayed to m(R) = 16.0 +/- 0.1 mag
for the first R-band exposure, calibrated with the nearby USNO B1 stars
(with R2 magnitudes).