[vsnet-grb-info 3678] GRB 060904A: P60 Observations

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5512
SUBJECT: GRB 060904A: P60 Observations
DATE:    06/09/04 07:40:17 GMT
FROM:    S. Bradley Cenko at Caltech  <cenko at srl.caltech.edu>

S. B. Cenko and A. Rau (Caltech) report on behalf of a larger
collaboration:

We have imaged the error circle of GRB 060904a (Grupe et al; GCN 5502)
with the automated Palomar 60-inch telescope.  Observations began at
4:57 UT 4 September (3.9 hours after the burst) and consisted of 12 x 180
s images in the Kron R and Sloan i' and z' filters.  We find no sources
inside the XRT error circle, to a limiting magnitude of R > 22.0
(estimated by comparison with several USNO-B objects in the field).