GCN Circular 24911
Subject
GRB 190627A: Koshka Zeiss-1000 optical counterpart observations
Date
2019-06-30T03:16:01Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Novichonok (KIAM), S. Belkin (IKI), A.
Zhornichenko (KIAM), A. Pozanenko (IKI), E. Mazaeva (IKI), I. Molotov
(KIAM) report on behalf of larger GRB IKI FuN collaboration:
We observed the the optical afterglow of GRB 190627A (e.g. Sonbas al.,
GCN 24888; Siegel al., GCN 24889) with Zeiss-1000 1-m telescope of
Koshka Observatory on June, 27 and June, 28 in R-filter. We clearly
detect the afterglow in both epoch. Preliminary photometry of the
afterglow is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2019-06-27 18:53:57 0.31732 R 180 17.70 0.08 19.9
2019-06-27 19:42:20 0.35092 R 180 17.80 0.07 20.3
2019-06-28 19:22:50 1.36775 R 5400 19.75 0.08 21.5
The photometry is based on the same USNO-B1.0 (R2) stars used in GCNs
24892 and 24900.