GCN Circular 14043
Subject
GRB 121128A: Optical Observations
Event
Date
2012-12-04T05:24:30Z (13 years ago)
From
Shashi Bhushan Pandey at ROTSE <shaship@umich.edu>
S.B. Pandey and Brajesh Kumar (ARIES Nainital, India, on behalf of larger
Indian GRB collaboration)
We observed GRB 121128A (Swift trigger 539866, Oates et al. 2012, GCN
Circ.14007) field with the 1.04m telescope at ARIES, Nainital starting at
2012-11-28 14:02:55 (UT). Several images in R_c and I_c pass-bands were
obtained.
The optical afterglow candidate ( Oates et al. 2012, GCN Circ.14007,
Japelj
et al. 2012, GCN Circ. 14008) was clearly detected in our frames. The
preliminary photometry of the co-added R_c (300sec x 3) and I_c (300sec x
3) frames yield following magnitudes.
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Time (MID-UT) Exp (sec) Filter Magnitude
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2012-11-28, 14:12:11 900 R_c 20.35 +/- 0.05
2012-11-28, 14:55:40 900 I_c 19.65 +/- 0.11
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Nearby USNO stars have been used for calibration.
This massage may be cited.