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GCN Circular 23777

Subject
GRB 190123A: GMG observational limit
Event
GRB 190123A
Date
2019-01-24T05:53:15Z (7 years ago)
From
Jirong Mao at Yunnan Obs <jirongmao_obs@ynao.ac.cn>
J. Mao, L.-F. Xing, M. Xiao, J.-M. Bai (YNAO) report: 


We observed the field of GRB 190123A (D'Ai et al. GCN Circ. 23769) with the 2.4-meter optical telescope at Gao-Mei-Gu (GMG) station of Yunnan Observatories. The observation began at UT 13:15:51, 23, Jan, 2019, about 1 hour after the trigger. We did not detect any source within the Swift-XRT error circle down to a magnitude of R~22.7.
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