GCN Circular 20340
Subject
GRB 161224A: TSHAO optical observations
Date
2016-12-26T13:04:31Z (7 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), I. Reva (Fesenkov Astrophysical Institute), A.
Kusakin (Fesenkov Astrophysical Institute), A. Volnova (IKI), A.
Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 161224A (Swift trigger=728268,
Cholden-Brownet al., GCN 20333) with Zeiss-1000 (East) 1-m telescope of
Tien Shan Astronomical Observatory. We obtained several images in R
filter starting on Dec. 25 (UT) 00:13:31 and Dec. 25 (UT) 23:45:12. We
do not detect any evident variable source in the BAT ground-calculated
position (Ukwatta al., GCN 20337). Within enhanced XRT position
(Cholden-Brownet al., GCN 20338) we not detected any source. Preliminary
photometry of the field is following
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2016-12-25 00:13:31 0.10201 R 16*180 n/d n/d 21.1
2016-12-25 23:45:12 1.07646 R 11*180 n/d n/d 20.7
Photometry is based on nearby USNO-B1.0 stars
0719-0341418 17.14
0720-0349085 17.50
0720-0348989 16.94
0719-0341338 15.94
A finding chart can be found in
http://grb.rssi.ru/GRB161224A/GRB161224A_20161225_TSHAO_fc.png
