GCN Circular 12619
Subject
GRB 111022B: CrAO optical limit
Event
Date
2011-12-04T22:27:27Z (14 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We observed the field of GRB 111022B (Holland et al. GCN 12472) with Shajn
telescope of CrAO observatory starting on Oct. 22 (UT) 20:44:36 under a
mean seeing (FWHM) of 3.2 arsces. We took several frames with exposure of
60 s in R-band. Within enhanced Swift-XRT position (Beardmore et al. GCN
12478) we do not detected any optical source. A photometry is based on the
USNO B1.0 star 1396-0186811 (07 15 51.05 +49 40 13.0) assuming R=17.07
.
T_start UT T0+ Filter, Exposure, OT, uplim (3 sigma)
(mid, d) (s)
20:44:36 0.1711 R 64x60 n/d 22.8