[vsnet-grb-info 14362] GRB 131231A, Optical Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  15676
SUBJECT: GRB 131231A, Optical Observations
DATE:    14/01/04 12:00:42 GMT
FROM:    Shashi Bhushan Pandey at ROTSE  <shaship at umich.edu>

S.B. Pandey, Brajesh Kumar and Archana Soam (ARIES Nainital India,
on behalf of larger Indian GRB collaboration)

The Fermi-LAT detected GRB 131231A (Sonbas et al., GCN 15640;
Xu et al., GCN 15641) was monitored  with the 1.04m and 1.3m
telescopes at ARIES Nainital starting at 2014-01-01 13:15:13 (UT).
Several images in R_c and I_c pass-bands were obtained.

The optical afterglow was clearly detected in individual frames.
The preliminary photometry of the first R_c frame (exposure time
300 sec) yields afterglow magnitude to be 19.2+-0.1 mag.

The nearby USNO stars have been used for calibrate.

This massage may be cited.