GCN Circular 12856
Subject
GRB 120118B: Faulkes Telescope South observations
Date
2012-01-18T23:08:17Z (12 years ago)
From
Andrea Melandri at INAF-OAB <andrea.melandri@brera.inaf.it>
A. Melandri (INAF-OAB), C. G. Mundell (Liverpool JMU) and C. Guidorzi
(U. Ferrara) report on behalf of a large collaboration:
The 2-m Faulkes Telescope South responded automatically to Swift GRB
120118B (Littlejohns et al. GCN Circ. 12852) with observations
beginning at 17:03 UT 2012 January 18th (~2.8 min after the BAT
trigger time).
Within the XRT error circle (Littlejohns et al. GCN Circ. 12854) we do
not find any source in the R and i' filters down to the following
(3sigma) limiting magnitudes:
Mid time from Total Exp Filter Magnitude
trigger (min) (s)
-------------------------------------------------
34.9 720 R > 18.9
39.2 700 i' > 19.1
-------------------------------------------------
Magnitudes have been calibrated from R2 and I nominal values of nearby
USNOB1.0 stars.