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GCN Circular 14414

Subject
GRB 130420B: Faulkes Telescope North observations
Date
2013-04-20T14:18:52Z (11 years ago)
From
Andrea Melandri at INAF-OAB <andrea.melandri@brera.inaf.it>
A. Melandri (INAF-OAB), C. Guidorzi (U. Ferrara) and C. G. Mundell  
(Liverpool) report on behalf of a larger collaboration:

The 2-m Faulkes Telescope North (FTN) automatically began observing  
GRB130420B (Oates et al., GCN 14411) on April 20, 12:59:50 UT  
corresponding to ~200 seconds after the burst event.

We detect no new, uncatalogued source in the BAT error circle down to  
the following limiting magnitudes:

Mid time from   Exp    Filter   Mag limit
trigger (min)   (sec)
---------------------------------------------------
28.62           540      R       > 20.5
32.75           520      I        > 20.0
---------------------------------------------------

The magnitudes are calibrated against nearby USNO-B1.0 stars.
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