[vsnet-grb-info 17542] GRB 160131A: AbAO optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18972
SUBJECT: GRB 160131A: AbAO optical observations
DATE:    16/02/01 20:28:41 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

E. Mazaeva (IKI), R. Inasaridze (AbAO), V. Ayvazian (AbAO), A. Volnova 
(IKI), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger 
GRB follow-up collaboration:

We observed the field of Swift GRB 160131A (Page et al., GCN 18951) with 
AS-32 (0.7m) telescope of Abastumani Observatory starting on Jan. 31 
(UT) 19:16:57. We obtained several unfiltered images of 120 s exposure. 
We detect optical afterglow (Page et al., GCN 18951; Yurkov et al., GCN 
18952; Guidorzi et al., GCN 18953; Xin et al., GCN 18954; Xin et al., 
GCN 18955; Watson et al., GCN 18956). Preliminary light curve can be 
found in http://grb.rssi.ru/GRB160131A/GRB160131A_20160131_AbAO_lc.png

The photometry is base on nearby USNO-B1.0 stars:

USNO-B.1_id  R2
0829-0078223 15.70
0829-0078147 14.56
0828-0074893 14.88
0828-0074768 14.81