TITLE:   GCN CIRCULAR
NUMBER:  3431
SUBJECT: GRB 050520: BART optical limit
DATE:    05/05/20 01:37:11 GMT
FROM:    Martin Jelinek at Inst.Astrophys.Andalucia,Granada  <mates@asu.cas.cz>

Martin Jelinek (IAA Granada, Spain), 
Martin Nekola, Petr Kubanek, Filip Munz, Jan Strobl and Rene
Hudec (ASU AV CR Ondrejov, Czech Republic)

report:

Robotic telescope BART located at Astronomical Institute in
Ondrejov has observed the errorbox of the INTEGRAL trigger
2505 15 minutes after the GRB time. We do not detect any new
source within the given errorbox down to limiting magnitude
V=14.