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GCN Circular 15140

Subject
GRB 130831A: Faulkes Telescope North and South optical afterglow
Date
2013-08-31T13:38:30Z (11 years ago)
From
Cristiano Guidorzi at Ferrara U,Italy <guidorzi@fe.infn.it>
C. Guidorzi (U. Ferrara), A. Melandri (INAF-OAB) on behalf of
a large collaboration report:

The 2-m Faulkes Telescopes North and South automatically began observing 
GRB
130831A (Hagen et al. GCN Circ. 15139) on August 31 2013 at 13:09:01 UT
(~4.7 min after the burst trigger).

We clearly detect the fading optical afterglow reported by Swift/UVOT
with R=14.1 +- 0.1 mag at 4.75 minutes since the BAT trigger time,
calibrated against nearby USNOB-1 catalogue stars.
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