[vsnet-grb-info 11666] GRB 120311B: Optical follow-up

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  13059
SUBJECT: GRB 120311B: Optical follow-up
DATE:    12/03/13 13:54:28 GMT
FROM:    Shashi Bhushan Pandey at ROTSE  <shaship at umich.edu>

Brajesh Kumar, Vijay Kumar Bhatt, S.B. Pandey (ARIES, Nainital, India, 
on behalf of larger Indian GRB collaboration).

GRB 120311B field (Marshall et al., GCN Circ 13038) was observed 
with the newly installed 1.3m Devasthal Fast Optical Telescope at 
Nainital. Several images in R_c pass-band (300 sec each) were taken 
in two sessions starting at UT 21:11:10, 11-03-2012.

In the initial co-added R_c frame (3x300sec), we did not detect any 
new optical source within the XRT error-box (Osborne et al., 
GCN Circ. 13042) down to a limiting magnitude of ~ 20.5 mag. 
The photometry was done in comparison to nearby USNO- B1 stars.

This massage may be cited.