[vsnet-grb-info 18571] GRB 161007A: AbAO optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  20019
SUBJECT: GRB 161007A: AbAO optical observations
DATE:    16/10/08 21:58:20 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

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

We observed the field of the GRB 161007A (D'Elia et al., GCN 20008) with 
AS-32 (0.7m) telescope of Abastumani Observatory  on October, 07 (UT) 
22:14:13. We obtained several unfiltered images of the field. Within XRT 
error circle (Goad et al., GCN 20013) we do not detected optical 
afterglow candidate (de Ugarte Postigo et al., GCN 20014). Preliminary 
photometry  of the field  is following

Date        UT start   t-T0      Filter Exp.   OT   UpLim (3 sigma)
                       (mid, days)       (s)

2016-10-07  22:14:13   0.05758   CR     37*60  n/d  22.4

Photometry is based on nearby USNO-B1.0 stars
USNO-B.1_id R2
1133-0144160    15.67
1133-0144193    15.95
1133-0144230    14.48
1133-0144267    15.92
1133-0144281    15.23