[vsnet-grb-info 14390] GRB 140108A: Mondy optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15704
SUBJECT: GRB 140108A: Mondy optical observations
DATE:    14/01/08 19:07:34 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

E. Klunko (ISTP), M. Eselevich(ISTP), A. Volnova (IKI), A. 
Pozanenko(IKI) report on behalf of larger GRB follow-up collaboration:

We observed the field of the Swift GRB 140108A (Racusin et al., GCN 
15699) with AZT-33IK telescope of Sayan observatory (Mondy) starting 
Jan., 08 (UT) 17:24:55.  We obtained several images in R-filter with 
exposure of 20,60 and 180 seconds. Within the enhanced XRT circle (Evans 
et al., GCN 15700) we detected  optical afterglow (Gorbovskoy et al., 
GCN 15701;  Gorosabel  et al., 15702) The  position of the afterglow 
coincids with  previously reported (Gorbovskoy et al., GCN 15701; Strobl 
et al., 15703). At (UT) 17:32, i.e. ~13.5 min. after GRB trigger the 
R-magnitude of the afterglow is ~19.2.

  The finding chart can be found in 
http://grb.rssi.ru/GRB140108A/GRB140108A_AZT33IK_2014-01-08T_17-30-34.png

Observation is continuing.