GCN Circular 19619
Subject
GRB 160625B: TSHAO optical observations
Date
2016-06-29T15:18:38Z (8 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), P.
Minaev (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Volnova
(IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up
collaboration:
We observed the field of GRB 160625B (Dirirsa et al., GCN 19580; Burns
et al. GCN 19581) with Zeiss-1000 (East) 1-m telescopes of Tien Shan
Astronomical Observatory. We obtained several images in R filter
starting on June 27 (UT) 20:15:57. We detect optical afterglow of GRB
160625B (Troja et al., GCN 19588; Oates et al., GCN 19589).
Preliminary photometry of a combined image is following
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2016-06-27 20:15:57 1.92994 R 54*60 19.56 0.06 22.0
Photometry is based on nearby USNO-B1.0 stars reported in GCN 19605
(Mazaeva et. al).