[vsnet-grb-info 21623] GRB 190114B: optical afterglow observations in Mondy and Abastumani observatories

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23722
SUBJECT: GRB 190114B: optical afterglow observations in Mondy and Abastumani observatories
DATE:    19/01/15 17:32:45 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),  R. Ya. Inasaridze (AbAO), V.R. Ayvazian 
(AbAO),  G. V.  Kapanadze (AbAO),    report   on behalf of IKI-FuN:

We observed the field of  the GRB  190114B (Siegel et al., GCN 23686) 
with AZT-33IK telescope of Sayan observatory (Mondy),   and  AS-32 
(0.7m) telescope of Abastumani Observatory.  The optical afterglow 
(Fernandez-Garcia et al., GCN 23694;  Pozanenko et al., GCN 23696; 
Selsing et al., GCN 23713) is detected in stacked images. Preliminary 
photometry is following.

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

2019-01-14 20:28:30 0.10233 R      30*120 19.87 0.06  Mondy
2019-01-15 01:04:51 0.24212 R      18*60  20.40 0.25  AbAO

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

The photometry might be affected by a nearby galaxy (r'=20.534, z_ph = 
0.32813+/-0.08585) at a distance of 5.6 arc seconds.