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GCN Circular 17199

GRB 141220A: LT optical afterglow observations
2014-12-20T08:32:50Z (9 years ago)
Cristiano Guidorzi at Ferrara U,Italy <>
C. Guidorzi (U. Ferrara), A. Gomboc (U. Ljubljana)
on behalf of a larger collaboration report:

The 2-m Liverpool Telescope automatically began observing Swift
GRB 141220A (Cummings et al. GCN 17196) on Dec 20 at 06:04:57 UT
(125 sec after the burst trigger).
The robotic LT-TRAP pipeline identified the optical afterglow
at the position reported by Gorosabel et al. (GCN 17197)
with r=18.6 +- 0.1 mag at 34 minutes after the GRB,
calibrated against nearby SDSS-R stars.
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