Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 13983

GRB 121123A: GMG optical observation
2012-11-23T12:32:40Z (12 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.
Looking for U.S. government information and services? Visit