GCN Circular 24949
Subject
GRB 190630B: Tien Shan and Koshka Zeiss-1000 optical upper limits
Date
2019-07-01T21:13:42Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Kusakin (FAPHI), I. Reva (FAPHI), A. Novichonok
(KIAM), A. Pozanenko (IKI), E. Mazaeva (IKI), A. Volnova (IKI), I.
Molotov (KIAM) report on behalf of larger GRB IKI FuN collaboration:
We observed the field of GRB 190630B (Krimm, et al., GCN 24913) with
Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory starting
on June, 30 (UT) 18:40:21 and Koshka Observatory starting on June, 30
(UT) 20:38:42 in R-filter. We do not detect the afterglow (Zheng, et
al., GCN 24914; Zheng, et al., GCN 24931). Preliminary photometry of
the field is following
Date UT start t-T0 Filter Exp. OT Err. UL Observatory
(mid, days) (s)
2019-06-30 18:40:21 0.55999 R 6720 n/d n/d 22.3 TSHAO
2019-06-30 20:38:42 0.63060 R 3780 n/d n/d 21.9 Koshka
The photometry is based on several nearby USNO-B1.0 stars.
USNO-B1.0_id R2
1315-0255078 18.06
1314-0253302 17.18
1314-0253267 15.88