GCN Circular 19680
Subject
GRB 160625B: TSHAO optical observations
Date
2016-07-11T12:56:47Z (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 on July
8 and 10. 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)
2016-07-08 19:01:43 12.9172 R 30*300 21.60 0.15 22.7
2016-07-10 18:19:18 14.8713 R 29*300 21.64 0.08 23.3
Photometry is based on nearby USNO-B1.0 stars reported in GCN 19605
(Mazaeva et. al).