GCN Circular 3061
Subject
GRB 050223: optical observations
Date
2005-02-23T18:54:22Z (19 years ago)
From
Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>
J. Gorosabel (IAA-CSIC, Granada),
S. Eguchi (Stelab, Nagoya Univ.),
A. de Ugarte Postigo (IAA-CSIC),
Ph. Yock (Univ. of Auckland) and
A.J. Castro-Tirado (IAA-CSIC), report:
"Following the detection by SWIFT of GRB
050223 (Mitani et al. GCN Circ. 3055)
we imaged the error box with the 0.6 m
telescope at Mt. John Univ. Observatory.
We obtained a 300s image with the MOA
camera (+wide R-band filter) under poor
seeing conditions (4") starting on
23.55 Feb UT (i.e. 10.05 hr after the event).
A finding chart can be found at:
http://www.iaa.es/~deugarte/GRBs/050223/T1143-grb050223-red-2.gif
Comparison of the R-band image with
the DSS-2 revealed neither counterpart
within the 5" radius X-ray afterglow position
given by XMM-Newton (Gonzalez-Riestra et
al. GCN Circ. 3060) nor variable source to
about R = 20.5 within the 4' radius SWIFT/BAT
error box."
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