TITLE: GCN CIRCULAR NUMBER: 19324 SUBJECT: GRB 160417A: GMG observations DATE: 16/04/18 03:17:12 GMT FROM: Jirong Mao at Yunnan Obs J.-J. Zhang, J. Mao, and J.-M. Bai (YNAO) report: We observed the field of GRB 160417A (D'Avanzo et al., GCN 19316) with the 2.4-meter optical telescope at Gao-Mei-Gu (GMG) station of Yunnan Observatories. Observations began from 12:30:03 UT, Apr. 17th, 2016, about 8.2 hours after the trigger. We obtained the following results at the afterglow position: r~21.1+/- 0.3 mag, i>20.9 mag, and g>21.8 mag.