GCN Circular 30064
Subject
ZTF21aayokph (AT2021lfa): continued Assy optical observations
Event
Date
2021-05-21T06:58:41Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
N. Pankov (HSE, IKI), S. Belkin (IKI), V. Kim (FAI, Pulkovo
Observatory), M. Krugov (FAI), A. Pozanenko (IKI), report on behalf of
GRB IKI FuN:
We observed the field of ZTF21aayokph (AT2021lfa) (Yao et al., GCN
29938) with AZT-20 telescope of Assy-Turgen observatory on 2021-05-17
and 2021-05-18.
We still detect the optical transient (Yao et al., GCN 29938; Watson et
al., GCN 29940; Butler et al., GCN 29941; Yao et al., GCN 29945; Fu et
al., GCN 29948; Kim et al., GCN 29950; O'Connor et al., GCN 29952; Ho
et al., GCN 29953; Pankov et al., GCN 29954; Lipunov et al., GCN 29959;
Pankov et al., GCN 29964).
Preliminary photometry of the optical transient is following
Date UT start t-T0 Exp. Filter OT Err. UL(3sigma)
(mid, days) (s)
2021-05-17 16:19:12 n/a 200*60 r' 23.60 0.28 23.9
2021-05-18 15:52:05 n/a 230*60 r' 23.67 0.29 24.0
The photometry is based on the nearby SDSS-DR12 stars.