[vsnet-grb-info 24805] GRB 200127A: Nanshan-0.6m optical upper limit
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Tue Jan 28 11:39:40 JST 2020
TITLE: GCN CIRCULAR
NUMBER: 26904
SUBJECT: GRB 200127A: Nanshan-0.6m optical upper limit
DATE: 20/01/28 02:37:47 GMT
FROM: Dong Xu at NAOC/CAS <dxu at nao.cas.cn>
X. Liu, D. Xu, Z.P. Zhu, B.Y. Yu, Y. Ma (NAOC), X. Gao (Urumqi No.1
Senior High School) report:
We observed the field of GRB 200127A (Moss et al., GCN 26895) using the
NEXT-0.6m telescope located at Nanshan, Xinjiang, China. Observations
started at 23:26:58 UT on 2020-01-27 (i.e., 8.71 h after the BAT
trigger), and 7x300 s Sloan r-band frames were obtained.
No optical afterglow is detected within the enhanced Swift-XRT error
circle (Evans et al., GCN 26902) in our stacked image, down to a
limiting magnitude of r ~ 20.5, calibrated with the nearby PanSTARRS field.
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