GCN Circular 3565
Subject
GRB 050626 optical observations
Date
2005-07-06T09:37:17Z (20 years ago)
From
Javier Gorosabel at IAA-CSIC <jgu@iaa.es>
J. Gorosabel, A.J. Castro-Tirado, (IAA-CSIC), P. Tristam,
T. Britton, Ph. Yock (Univ. of Auckland), S. Guziy, A. de
Ugarte Postigo, M. Jelinek (IAA-CSIC), O. Bogdanov (Nikolaev
State Univ.), report:
"We have observed the error box of the INTEGRAL GRB 050626 (Gotz
et al. GCN Circ. 3552). The observations were carried out ~4 hours
after
the gamma-ray event with the 0.6 m telescope at Mt. John Astronomical
Observatory (MOA) using the MOA wide red filter (Texp=5x300s). We
note the presence of Alpha Crucis (R=1.3) close to the error box,
which produces a strong background gradient in our images. Thus, the
deepness of the combined image ranges approximately from R~14 to
R~20.5 depending on the position within the error box. Comparison with
the DSS did not reveal any variable source in the INTEGRAL error box,
including the position of the unlikely X-ray afterglow (Mangano
et al.,
GCN Circ. 3564). At this X-ray source position the limiting
magnitude
of our combined image is approximately R~20."
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