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GCN Circular 13983

GRB 121123A: GMG optical observation
2012-11-23T12:32:40Z (11 years ago)
Xiao-hong Zhao at Yunnan Obs <>
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.
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