[vsnet-grb-info 13558] GRB 130610A: iTelescope T21 optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14891
SUBJECT: GRB 130610A: iTelescope T21 optical observations
DATE:    13/06/13 05:26:42 GMT
FROM:    Veli-Pekka Hentunen at Taurus Hill Obs,A95  <veli-pekka.hentunen at kassiopeia.net>

Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill
Observatory, Varkaus, Finland) report:

We have detected GRB 130610A optical afterglow at iTelescope observatory
T21 (Mayhill, New Mexico) 0.43m/6.8 astrograph and FLI-PL6303E CCD
camera. Three unfiltered images and three photometric R filter images with 
300 sec exposure time were made.

The afterglow was detected at following position RA 14:57:40.86 and 
DEC +28:12:26.0

The following magnitudes were obtained from the observations using 
NOMAD1 1182-0257977 (R=14.110) as the comparison:

Tmid(sec)+T0    Filter          Exp. time    Mag              Mag err. 
2442                  unfiltered      300            19.09CR     0.15
2759                  unfiltered      300            19.34CR     0.19
3076                  unfiltered      300            19.17CR     0.16
3717                  R                 300            19.58R        0.32
4034                  R                 300            19.93R        0.44
4351                  R                 300            19.93R        0.43