[vsnet-grb-info 13077] GRB 130420B: Faulkes Telescope North observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14414
SUBJECT: GRB 130420B: Faulkes Telescope North observations
DATE:    13/04/20 14:18:52 GMT
FROM:    Andrea Melandri at INAF-OAB  <andrea.melandri at 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.