[vsnet-grb-info 25466] GRB GRB 200412B: AbAO optical observations
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Mon Apr 13 19:10:17 JST 2020
TITLE: GCN CIRCULAR
NUMBER: 27566
SUBJECT: GRB GRB 200412B: AbAO optical observations
DATE: 20/04/13 10:09:07 GMT
FROM: Alexei Pozanenko at IKI, Moscow <apozanen at iki.rssi.ru>
S. Belkin (IKI), A. Pozanenko (IKI), R. Ya. Inasaridze (AbAO), V.R.
Ayvazian (AbAO), G. V. Kapanadze (AbAO), E. Mazaeva (IKI), A.
Volnova (IKI), I. Molotov (KIAM) report on behalf of GRB IKI FuN:
We observed the field of Fermi GRB 200412B (Fermi GBM team GCN 27547;
Longo et al., GCN 27557) with AS-32 (0.7m) telescope of Abastumani
Observatory starting on 2020-04-12 (UT) 18:42:21. We detected the
afterglow of GRB 200412B (Lipunov et al., GCNs 27555; Kumar et al., GCN
27564). Preliminary photometry of the afterglow is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2020-04-12 18:42:21 0.41783 R 56*60 18.31 0.02 21.3
The photometry is based on nearby USNO-B1.0 stars
UUSNO-B1.0_id R2
1525-0302108 17.21
1524-0300914 17.20
1525-0301929 17.85
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