[vsnet-grb-info 4666] GRB070518: OSN observation
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Sat May 19 10:04:32 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 6418
SUBJECT: GRB070518: OSN observation
DATE: 07/05/19 01:04:27 GMT
FROM: Martin Jelinek at Inst.Astrophys.Andalucia,Granada <mates at iaa.es>
Martin Jelinek, Alberto J. Castro-Tirado, Victor Casanova,
Javier Gorosabel, Antonio de Ugarte Postigo, Stanislav Vitek,
Ronan Cunniffe and Petr Kubanek (IAA CSIC Granada, Spain)
report
We observed the optical afterglow of GRB070518 (Guidorzi et
al, GCN6415) with a 1.5m telescope at Observatorio Sierra
Nevada using R and I-band filters. The afterglow is found to
have R~22.2, relatively to the nearby USNO-A2.0 (R_usno=18.7)
on a 60-minute combined image with exposure mean time 23:04UT
(i.e. 8.6h after the GRB).
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