GCN Circular 23878
Subject
GRB 190203A: Mondy optical observations
Date
2019-02-06T18:09:10Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), E. Klunko (ISTP), A. Pozanenko (IKI), E. Mazaeva
(IKI), S. Belkin (IKI) report on behalf of IKI-GRB-FuN:
We observed the field of GRB 190203A (Lien et al. GCN 23845) with
AZT-33IK telescope of Sayan observatory (Mondy) starting on Feb. 03 (UT)
16:23:21. We detected the optical afterglow (Lien et al. GCN
23845; Moskvitin et al., GCN 23847; Lipunov et al. GCN 23850).
Preliminary photometry of the afterglow is following.
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
(mid, days) (s)
2019-02-03 16:23:21 0.04807 R 30*120 21.14 0.27 21.3
The photometry is based on the nearby USNO-B1 stars used in GCN 23847.