GCN Circular 12314
Subject
GRB 110825A: GMG optical observation
Date
2011-08-28T12:03:44Z (13 years ago)
From
Xiao-hong Zhao at Nanjing University <zhaoxiaohong78@gmail.com>
X. H. Zhao (YNAO), D. Xu (WIS), J. M. Bai (YNAO), report on behalf of a larger collaboration:
We observed the XRT field (Zhang & Grupe, GCN 12308) of GRB 110825A
(Hurley et al., GCN 12307) with the 2.4m Gao-Mei-Gu (GMG) telescope
equipped with YFOSC in Yunan, China. Observations started at 19:02:36
UT on 27th August 2011 and 3x1200s R-band images were obtained.
The possible optical afterglow candidate, derived from a weak
detection from a single frame (Xu et al., GCN 12311) is not detected
in our stacked R-band image, which gives rise to a 3sigma upper limit
of R~23.9 mag for the XRT error circle, calibrated with the same USNO
reference star in GCN 12311.
No further observation with the GMG telescope is planned.