TITLE:   GCN CIRCULAR
NUMBER:  12844
SUBJECT: GRB 120116A: Mondy optical observations
DATE:    12/01/17 18:12:05 GMT
FROM:    Alina Volnova at SAI MSU  <alinusss@gmail.com>

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

We observed the field of the Swift GRB 120116A (Melandri et al., GCN
12834) with AZT-33IK telescope of Sayan observatory (Mondy) on Jan, 16
between (UT) 18:49:24 - 19:20:20, i.e. starting 40 minutes after the
trigger. We took several series of 60 s exposures in R-filter. Within
the XRT error circle (Melandri et al., GCN 12834)  we do not detect
any source, in particular we do not detect the source reported by
Levan and Tanvir (GCN 12843). The photometry is based on the USNO-B1.0
1239-0020213 star (RA=01 05 04.50, Dec=+33 55 37.7) assuming R2=16.36.

UT_start,  T0+,        Filter,  Exposure,    OT       uplim,
               d                                                       3 sigma
18:49:24   0.03815  R         29x60         n/d       19.5