[vsnet-grb-info 17382] V404Cyg Swift Trigger 668097: AbAO optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  18767
SUBJECT: V404Cyg Swift Trigger 668097: AbAO optical observations
DATE:    15/12/30 10:31:22 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

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

We observed V404 Cyg after Swift BAT trigger 668097 (Barthelmy et al., GCN 
18716) with AS-32 (0.7m) telescope of Abastumani Observatory. Observations 
started on Dec., 28 (UT) 16:19:10. We obtained several unfiltered images of 
60 s exposure. The source has a flare during our observations, the maximal 
brightness of the source during our observations is 15.5m at (UT) 16:22:39. 
It is also apparent that we observed only a small episode of new flaring 
activity of V404 Cyg.

Preliminary light curve of the V404 Cyg can be found in 
http://grb.rssi.ru/V404_Cyg/v404Cyg_AAO_20151228_lc.png

Photometry is based on following USNO-B1.0 stars

USNO-B.1_id  R2

1238-0434779 13.52
1238-0434864 14.12