[vsnet-grb-info 3675] GRB 060904 BOOTES-IR and 1.5m OSN observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5509
SUBJECT: GRB 060904 BOOTES-IR and 1.5m OSN observations
DATE:    06/09/04 04:28:18 GMT
FROM:    Antonio Deugarte at IAA-CSIC  <deugarte at iaa.es>

A. de Ugarte Postigo, F. Aceituno, A.J. Castro-Tirado
(IAA-CSIC Granada), P. Kubanek (ASU AV CR ndrejov & 
ISDC Versoix) on behalf of a larger collaboration report:

"The 0.6m BOOTES-IR and 1.5m telescope, located at IAA-CSIC 
Observatorio de Sierra  Nevada in Granada (Spain), observed the 
SWIFT error box for GRB 060904 (Grupe et al. GCN 5505) starting at
02:38:30 UT observing in I & R-bands. We clearly detect the optical
counterpart reported by Rykoff et al. (GCN 5504), at coordinates J2000
(+/-0.5"):

03:52:50.54 -00:43:30.5

>From 02:38:30 to 02:48:35 UT the object has declined in 0.66 +/- 0.17 
magnitudes.

This message is quotable."