TITLE:   GCN CIRCULAR
NUMBER:  14860
SUBJECT: GRB 130610A: ISON-NM optical observations
DATE:    13/06/10 18:56:07 GMT
FROM:    Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>

L. Elenin (KIAM),  V. Savanevych (KNURE),  A. Bryukhovetskiy (NSFCTC), 
I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of  larger GRB 
follow-up collaboration:

We observed of  the field of  the Swift GRB 130610A (Cummings et al., 
GCN 14842)  with 0.45-m telescope of ISON-NM observatory starting on 
June, 10 (UT) 03:53:49. Series of 30 s  exposures were obtained in clear 
filter. In the combined images we detect afterglow  (Cummings et al., 
GCN 14842; Melandri et al., GCN 14843; Trotter et al., GCN 14844). 
Preliminary photometry  is based  on the SDSS nearby  stars:


UT start,   T0+       Filter  Exposure,  OT,
             days              s
03:53:49    0.03531   none    25*30     19.33 ± 0.07
04:12:33    0.04831   none    25*30     19.56 ± 0.10