TITLE: GCN CIRCULAR NUMBER: 7648 SUBJECT: GRB 080430: Bootes observation DATE: 08/04/30 20:21:25 GMT FROM: Martin Jelinek at Inst.Astrophys.Andalucia,Granada M. Jelinek, P. Kubanek, J. Gorosabel, A. J. Castro-Tirado, F. Aceituno (IAA-CSIC Granada), L. Sabau-Graziati (INTA Madrid), A. de Ugarte Postigo (ESO Santiago), R. Hudec (ASU-CAS Ondrejov), P. Perez-Gonzalez and J. Zamorano (UCM Madrid) report on behalf of a larger collaboration: The BOOTES-1 0.3m telescope in South Spain observed GRB 080413A, starting at 19:53:36 UT (34 sec after the GRB). A sequence of preprogrammed 6 sec, 20 and 60 sec exposures was obtained. We find an optical counterpart at the coordinates (J2000) 11:01:14.777 +51:41:08.61 with an unfiltered magnitude ~17.0 at ~60s after the GRB. We continue observing the object with the 1.5m telescope at Observatorio Sierra Nevada, which confirms the reality of the object. -- Martin Jelinek, +420602105255, +34617840945, sirrah.cz/mates Instituto de Astrofisica de Andalucia, Granada # vim:set ai et sts=8 tw=60: