[vsnet-grb-info 14966] GRB 140508A: Mondy upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  16260
SUBJECT: GRB 140508A: Mondy upper limit
DATE:    14/05/13 14:17:02 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen at iki.rssi.ru>

A. Volnova (IKI), E. Klunko (ISTP), M. Eselevich (ISTP), I. Korobtsev
(ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up 
collaboration:

We observed the field of GRB 140508A (Yu et al., GCN 16224) with
AZT-33IK telescope of of Sayan observatory (Mondy) starting on May, 12 
(UT) 15:32:03. Within enhanced Swift-XRT error circle (Amarel-Rogers et 
al., GCN 16232) we do not detect the optical source reported by Singer 
et al. (GCN 16226).

Details of the photometry are the following:

date         UT start   t-T0        Exp.     Filter   UpperLimit
                        (mid, days)  (s)               (3sigma)
2014-05-12   15:32:03   4.56124     60x120   R        22.9

The photometry is based on a reference star from SDSS-DR9,
(R mag, transformation by Lupton 2005):

SDSS_id               R(Lupton)   err
J170144.75+464707.7   18.272      0.018