GRB 210420B: AST3-3 YaoAn Optical Observation
Abstract
Following the detection of GRB210420B by Swift (Moss et al. GCN 29844), we use Antarctic Survey Telescope 3-3 at YaoAn Astronomy Observation(China, Yunnan) to follow up. We observed 80 images in the g-band and exposure time in 60 seconds. The observation started at 2021-04-20T20:07:30.596 and ends at 2021-04-20T21:42:43.897. Within the candidate position (A. Oksanen et al. GCN 29846), we detected the source with 16.9 mag at 2021-04-20T20:07:30.596 and 17.5 mag at 2021-04-20T21:42:43.897.
- Publication:
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GRB Coordinates Network
- Pub Date:
- April 2021
- Bibcode:
- 2021GCN.29848....1S