GCN Circular 28460
Subject
GRB 200919A: CrAO/ZTSh early optical upper limit
Date
2020-09-19T21:12:19Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on
behalf of IKI-GRB-FuN:
We observed the GRB 200919A (Ukwatta et al., GCN 28454) with ZTSH 2.6m
telescope of CrAO observatory starting on 2020-09-19 (UT) 02:26:25. We
do not detect any new evident object in the BAT GRB 200919A localization
field (Ukwatta et al., GCN 28454).
Preliminary photometry of the field is following
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2020-09-19 02:26:25 0.02541 R 30*10 n/d n/d 19.8
The photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id R2
1224-0243383 15.75
1224-0243414 15.12