TITLE:   GCN CIRCULAR
NUMBER:  15781
SUBJECT: GRB 140129A: Khureltogot optical  limit
DATE:    14/01/31 09:54:37 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

A. Volnova (IKI), N. Tungalag (Research Centre of Astronomy and Geophysics 
MAS ) V. Voropaev (KIAM), I.Molotov (KIAM), A. Pozanenko (IKI) report on 
behalf of larger GRB
follow-up collaboration:

We observed the field of the Swift GRB 140129A (Melandri et al., GCN 15760) 
on Jan., 29 with ORI-40 telescope of  Khureltogot  observatory (Mongolia). 
We took
several unfiltered images  of 60 s exposure. Within enhanced XRT error 
circle (Evans et al., GCN 15764) we do not detect the optical afterglow 
(Melandri et al., GCN 15760).

Details of the photometry are following:

UT start        t-T0             Filter   Exp.     OT   UL (3 sigma)
                  (mid, days)                 (s)
12:02:22     0.38515         None   68x60   n/d   20.0

The photometry is based 3 SDSS stars, R (gri -> R transformations by
Lupton 2005):

SDSS id                                 R
J023133.01-013533.5       18.121
J023122.45-013411.0       18.797
J023137.01-013606.5       19.143