GCN Circular 24712
Subject
GRB 190530A: Mondy and AbAO optical observations
Event
Date
2019-06-02T09:53:20Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), E. Klunko (ISTP), R. Ya. Inasaridze (AbAO), A.
Pozanenko (IKI), V.R. Ayvazian (AbAO), E. Mazaeva (IKI), A. Volnova
(IKI) report on behalf of IKI GRB FuN collaboration:
We continue observations the optical afterglow (Lipunov et al., GCN
24680, 24693 and also e.g. Kann et al., GCN 24684; Melandri et al., GCN
24689; Heintz et al., GCN 24686; Lzzo et al., GCN 24687; Xin et al.,
GCN 24688; Watson et al., GCN 24690; Xin et al., GCN 24697) of the
Fermi GRB 190530A (Fermi GBM Team, GCN 24676; Longo et al., GCN
24679) with AZT-33IK telescope of Sayan observatory (Mondy) and AS-32
(0.7m) telescope of Abastumani Observatory. The afterglow is clearly
visible in stacked images. Preliminary photometry of the afterglow is
following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2019-06-01 15:35:00 2.23638 R 29*60 19.62 0.07 21.2
2019-06-01 17:38:57 2.31769 R 30*60 19.70 0.14 20.6
The photometry is based on the nearby USNO-B1.0 stars
USNO-B1.0_id R2
1255-0157926 13.35
1254-0159410 12.63
1255-0157793 13.56
The photometry might be influenced by nearby optical source presented in
Pan-STARRS DR1 catalog (ID 150571205309266249) mentioned in (Lipunov
et al., GCN 24680).