[vsnet-grb-info 12620] GRB 121117A: Optical observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  13980
SUBJECT: GRB 121117A: Optical observations
DATE:    12/11/21 11:24:44 GMT
FROM:    Shashi Bhushan Pandey at ROTSE  <shaship at umich.edu>

Brajesh Kumar, Ram Kesh Yadav, S.B. Pandey and V.K. Bhatt (ARIES, Nainital,
India, on behalf of larger Indian GRB collaboration).

GRB 121117A (Cummings et al., GCN 13967) field was observed with the 1.3m
Devasthal Fast Optical Telescope at Nainital. Three images in R_c pass-band
(300 sec each) starting at 2012-11-17 14:35:26 (UT) were acquired. In the
co-added R_c frame (300sec x 3), we did not detect the optical source
(Oates et al., GCN 13973) down to a limiting magnitude of ~20.5 mag
(in comparison to nearby USNO- B1 stars).

This massage may be cited.