GCN Circular 34457
Subject
GRB 230816A: TShAO and Assy optical observations
Date
2023-08-16T20:29:24Z (a year ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
Via
legacy email
N. Pankov (HSE, IKI), I. Reva (FAI), V. Kim (FAI), A. Pozanenko (IKI), S. Belkin (IKI) report on behalf of the GRB-IKI-FuN.
We observed the field of the GRB 230816A (Siegel et al., GCN 34450)
with Zeiss-1000 telescope of Tien-Shan Observatory (TShAO) and AZT-20 telescope of Assy Observatory. We clearly detect the afterglow (Jiang et al., GCN 34453; Moskivitin et al., GCN 34456) in the stacked images.
Preliminary photometry is following
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma)
(mid, days) (s)
2023-08-16 16:21:24 0.034787 R 25*180 19.57 0.10 22.3
2023-08-16 17:26:29 0.072354 r' 53*60 21.10| 0.025 23.5
The photometry is based on nearby stars of USNO-B1.0 and PanSTARRS-DR1 catalogues.
RA Dec R2 r'
328.5043802 +37.8674441 16.47 16.8245
328.3579777 +37.8706420 17.04 17.1589
328.4483771 +37.8290610 15.45 15.3054