TITLE:   GCN CIRCULAR
NUMBER:  7821
SUBJECT: GRB 080604: MITSuME Okayama observation
DATE:    08/06/05 10:00:56 GMT
FROM:    Michitoshi Yoshida at Okayama Astrophysical Obs  <yoshida@oao.nao.ac.jp>

M. Yoshida, K. Yanagisawa, D. Kuroda, Y. Shimizu, S. Nagayama,
H. Toda (OAO, NAOJ) and N. Kawai (Tokyo Tech) report on behalf of
the MITSuME collaboration:

We observed the field of GRB 080604 (La Parola et al., GCN7800) with
the 50cm MITSuME Telescope at Okayama Astrophysical Observatory on
June 4 UT. We detected a faint point source at the UVOT position
(La Parola et al., GCN7800; Rol et al., GCN7801; De Pasquale et al.,
GCN7820) in our Ic band image. Photometric calibration was done using
USNO-B1.0 catalog.

      mid-UT        exp-T      g'      Rc           Ic
------------------------------------------------------------
2008-6-4 12:41:48   49min    >20.0    >19.2    18.6 +/- 0.4
------------------------------------------------------------