TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3207
SUBJECT: GRB 050408: Optical limit at 20 min after the burst
DATE:    05/04/09 12:27:01 GMT
FROM:    Yuji Urata at RIKEN  <urata@crab.riken.go.jp>

T. Mizuno, Y. Arai, H. Yamagishi (Tokyo Gakugei Univ.), 
T. Soyano (Kiso observatory), Y. Urata, T. Tamagawa(RIKEN),
K.Y. Huang(NCU) on behalf of EAFON report,

" We have imaged the entire error region of GRB 050408 (GCN3189) with
1.05m Schmidt telescope at Kiso observatory, Japan in R band.
Utilizing HETE-2 GCN alert, the observation was started at 16:42 UT
(20 min after the burst) and lasted to 1 hour.  There is no optical
emission from the optical afterglow (GCN 3192, GCN 3196) down to a
limiting magnitude of R=19.1 as estimated using USNO B1.0 catalog.

This message may be cited."