TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4660
SUBJECT: GRB 060204B: ART optical limit
DATE:    06/02/04 17:14:52 GMT
FROM:    Ken ichi Torii at RIKEN  <torii@ess.sci.osaka-u.ac.jp>

K. Torii (Osaka U.) reports on behalf of the ART collaboration:

 The error region of GRB 060204B (Falcone et al. GCN 4655) was imaged
with the 0.35m ART 3b telescope in Toyonaka, Osaka.

 From a stacked frame (60s x 20 in Ic), the following 3 sigma limit is
derived for an optical counterpart of the XRT source (GCN 4655), with
reference to USNO-B1.0 I magnitude.

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StartUT		Limits
=============================
14:59:31	>18.0I
=============================