GRB 201223A: GWAC-F60A optical afterglow observations
Abstract
We began to observe GRB 201223A (Gropp et al., GCN #29158, Wood et al., GCN #29161) with Xinglong GWAC-F60A telescope, China, at 17:59:10.1 (UT), 23th. Dec. 2020, about 44 sec after the burst. A series of R, I, and B band images were obtained. The optical afterglow reported by (Lipunov et al., GCN #29157; Gropp et al., GCN #29158; Zhu et al., GCN #29159; Hu et al., GCN #29160; Hosokawa et al., GCN #29164; Filipp Dmitrievich Romanov GCN #29165) was clear detected in our images. The brightness is fading from 15.0 mag to 18.8 mag in R band during about 100 sec to 10000 sec after the burst. The R-band brightness is calibrated to the USNO B1.0 catalog, (RA=08:50:21.447, DEC=+71:12:12.80, J2000, R2=9.92) More analysis are still continuing. The message may be cited.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- December 2020
- Bibcode:
- 2020GCN.29166....1X