GCN Circular 29954
Subject
ZTF21aayokph (AT2021lfa): Mondy and Koshka observatory optical observations
Date
2021-05-06T20:42:41Z (3 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
N. Pankov (HSE, IKI), S. Belkin (IKI), E. Klunko (ISTP), A. Novichonok
(Petrozavodsk State University, KIAM), A. Pozanenko (IKI), A.
Zhornichenko (KIAM) report on behalf of GRB IKI FuN:
We observed the field of ZTF21aayokph (AT2021lfa) (Yao et al., GCN
29938) with AZT-33IK telescope of Sayan observatory (Mondy) and and
Zeiss-1000 telescope of Koshka observatory (INASAN).
We clearly 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)
in Mondy observatory and marginally detect it in Koshka observatory.
Preliminary photometry of the optical transient is following
Date UT start Filter Exp. OT Err. UL(3sigma) Telescope
(s)
2021-05-05 14:57:10 R 25*120 20.70 0.07 22.7 AZT-33IK
2021-05-05 17:56:56 R 38*120 21.5 0.4 21.3 Zeiss-1000
The photometry is based on the nearby USNO-B1.0 star
USNO-B1.0_id R2
0884-0227886 14.13