[vsnet-grb-info 15745] GRB 141026A: CrAO optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17033
SUBJECT: GRB 141026A: CrAO optical observation
DATE:    14/11/06 18:49:43 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

V. Rumyantsev (CrAO), E. Mazaeva (IKI),  A. Volnova (IKI), A. Pozanenko 
(IKI) report on  behalf of larger GRB follow-up collaboration:

The GCN #17032 should be read as following:
(We are sorry for inconvenience)

We observed the field of the Swift GRB GRB 141026A (Hagen et al., GCN 
16950) with ZTSh telescope of CrAO observatory starting on Oct. 26 (UT) 
18:25:48. We took several images in R-filter of 120 s exposure under 
poor weather conditions and mean seeing of 5". The optical afterglow 
(Littlejohns et al. GCN 16592; Varela et al. GCN 16953; Gorosabel et al. 
GCN 16954) is clearly visible in our stacked image.   Photometry of a 
combined image is following

Date       UT start,  t-t0     Filter   Exp.      OT   OT_err
                       (mid, days)        (s)

2014-10-26 18:25:48   0.7020   R        53*120    21.88 0.18

The photometry is based on USNO-B1.0  stars

RA             DEC           R
044,065509    +26,958050     18.71
044,051792    +26,894737     18.59
044,049131    +26,929059     17.48