GCN Circular 17007
Subject
GRB 141031B: TShAO optical upper limit
Date
2014-10-31T20:03:58Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Khruslov (INASAN), A. Volnova (IKI), A. Pozanenko
(IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the GRB 141031B (Gompertz et al., GCN 16998)
with Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical
Observatory on Oct., 31 starting on (UT) 15:39:02, i.e. ~0.7 hours
after burst trigger. We took several images in R-filter of 600 exposure.
In the first image we do not detect any object brighter than R=21.5 in
XRT error circle (Gompertz et al., GCN 16998).
Details of the photometry are following:
date UT start t-T0 Filter Exp. UL (3 sigma)
(mid, days) (s)
2014-10-31 15:39:02 0.03284 R 600 21.5
The photometry is based on nearby SDSS DR9 stars.