[vsnet-grb-info 15079] GRB 140606A: AAO optical upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16371
SUBJECT: GRB 140606A: AAO optical upper limit
DATE:    14/06/09 18:37:52 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

A. Volnova (IKI), R. Inasaridze (AAO), O. Kvaratskhelia (AAO), V.
Ayvazian (AAO), Yu. Krugly (IA KhNU), I. Molotov (KIAM), A. Pozanenko
(IKI) report on behalf of larger GRB follow-up collaboration:

We observed a field of the Swift GRB 140606A (Stroh et al., GCN 16353) 
with AS-32 (0.7m) telescope of Abastumani Observatory starting on June,
06 (UT) 18:16:50. We obtained several unfiltered frames with exposure of 
each frame of 120 s. Within the BAT ground-calculated position (Cummings 
et al., GCN 16354) we do not detect evident variable source.

The details of the photometry are the following:

date       UT start   t-T0       Filter  Exp.    Uplim
                      (mid, days)         (s)     (3 sigma)

2014-06-06 18:16:50   0.33147    None   30*120   21.7

and based on SDSS star, R (gri -> R transformations by Lupton 2005):
J132717.88+373507.2
R_Lupton = 16.45 ± 0.013