Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 3023

GRB 050215b, BOOTES-1B optical limit
2005-02-15T04:23:01Z (19 years ago)
Martin Jelinek at Inst.Astrophys.Andalucia,Granada <>
Martin Jelinek, Javier Gorosabel, Alberto J.
Castro-Tirado, Antonio de Ugarte Postigo, (IAA CSIC,
Granada), Petr Kubanek, Rene Hudec (ASU AV CR Ondrejov)
and Stanislav Vitek (FEL CVUT Praha). report:

We have imaged the error box of Swift's GRB 050215b
[trigger #106107], with the BOOTES-1B facility in
southern Spain. Comparison with the GSC-2 catalogue does
not reveal any new source. We report the following
3-sigma magnitude limits 25.6 minutes (mean obs. time)
after trigger:

	V > 16.5  
	I > 15.0

on our 600s exposures. 

[GCN OPS NOTE (15feb05):  Per author's request, the 050215c was changed 
to 050215b (since the HETE trigger earlier turned out to not be a real GRB.)]
Looking for U.S. government information and services? Visit