[vsnet-grb-info 12623] GRB 121123A: GMG optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  13983
SUBJECT: GRB 121123A: GMG optical observation
DATE:    12/11/23 12:32:40 GMT
FROM:    Xiao-hong Zhao at Yunnan Obs  <zhaoxiaohong78 at gmail.com>

X.-H. Zhao (YNAO), C. -J. Wang, J.-R. Mao (KASI/YNAO), J.-M. Bai 
(YNAO) report on behalf of a larger collaboration:

We observed the field of GRB 121123A (Helder et al., GCN 13982) with 2.4m Gao-Mei-Gu (GMG) telescope. Observations
started at ~1.5 hrs after the burst. The optical afterglow of this burst was detected. The preliminary magnitude was R~19.2. 
observation is on going.
   
We thank the GMG staff, especially Hong-Yan Gao, and De-Qing Wang for doing these observations.