GCN Circular 22301
Subject
GRB 180102A: TSHAO optical upper limit
Date
2018-01-03T17:34:05Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Pozanenko (IKI), I. Reva (FAPHI), M. Krugov
(FAPHI), A. Volnova (IKI), A. Kusakin (FAPHI) report on behalf of
larger GRB follow-up collaboration:
We observed the field of GRB 180102A (Page et al., GCN 22292) with
Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory starting
on Jan. 02 (UT) 21:34:54. We took several images in R-filter. We do not
detect any new sources within enhanced XRT error circle (Beardmore et
al., GCN 22294). Preliminary photometry of the field is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2018-01-02 21:34:54 0.25428 R 21*120 n/d n/d 20.6
The photometry is based on several nearby USNO-B1.0 stars.