GCN Circular 17653
Subject
GRB 141220A: GMG observation limit
Date
2015-03-29T11:09:44Z (9 years ago)
From
Jirong Mao at Yunnan Obs <jirongmao_obs@ynao.ac.cn>
J. Mao, B. Lun and J.-M. Bai (YNAO) report:
We observed the field of GRB 141220A (Cummings et al., GCN 17196) with the 2.4-meter optical telescope at Gao-Mei-Gu (GMG)
station of Yunnan Observatory. Observations began from UT 22:28:38.1 20, Dec., 2014 (about 18.4 hours after the trigger).
We did not detect the optical counterpart down to a limit of r'~21.0.
We thank Dr. A., de Ugarte Postigo for his kind suggestion and disucssion. J. Mao apologizes for this very later GCN circular submission.