[vsnet-grb-info 21644] GRB 190114B: continued optical observations in Mondy

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23743
SUBJECT: GRB 190114B: continued optical observations in Mondy
DATE:    19/01/16 17:06:37 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

A. Volnova (IKI), A. Pozanenko (IKI),  E. Mazaeva (IKI),  E. Klunko 
(ISTP), S. Belkin (IKI) report   on behalf of IKI-GRB-FuN:

We observed the field of  the GRB  190114B (Siegel et al., GCN 23686) 
with AZT-33IK telescope of Sayan observatory (Mondy) starting on Jan. 15 
(UT) 21:06:04. The optical afterglow (e.g. Fernandez-Garcia et al., GCN 
23694;  Pozanenko et al., GCN 23696; Selsing et al., GCN 23713) is 
marginally detected in a stacked image. Preliminary photometry is following.

Date       UT start t-T0    Filter Exp.   OT    Err.
                    (mid, days) (s)

2019-01-15 21:06:04 1.08672 R      30*120 22.2 0.35

The photometry is based on nearby SDSS  stars
SDSS id             R_Lupton
J113927.36+185157.2 17.094 0.014
J113940.10+185315.3 17.015 0.015
J113939.20+185354.8 17.954 0.018