TITLE: GCN CIRCULAR NUMBER: 17614 SUBJECT: GRB 150314A: GMG observation limit DATE: 15/03/23 05:39:31 GMT FROM: Jirong Mao at Yunnan Obs J. Mao, B. Lun and J.-M. Bai (YNAO) report: We observed the field of GRB 150314A (Hagen et al., GCN 17573) with the 2.4-meter optical telescope at Gao-Mei-Gu (GMG) station of Yunnan Observatory. Observations began from UT 12:22:09.5 14th, March, 2015 (about 7.5 hours after the trigger). We did not detect any optical source at the XRT position down to a limit of R~21.0.