TITLE:   GCN CIRCULAR
NUMBER:  3335
SUBJECT: GRB 050502a : R band  observation at Lulin observatory
DATE:    05/05/02 16:49:12 GMT
FROM:    Yuji Urata at RIKEN  <urata@crab.riken.go.jp>

K. Sanchawala, W.L. Wu, K.Y. Huang, W.H. Ip(NCU),
Y. Qiu, W. Zhou (BAO), Y.Q. Lou (THCA), Y. Urata (RIKEN), 
on behalf of EAFON report:

" We have observed the position of GRB 050502a optical afterglow (Yost
et al. GCN 3322) using 1-m telescope at Lulin Observatory,
Taiwan. Under unstable weather condition, single R band image was
taken at 15.59 UT (~ 13.37 hours after the burst). The limiting
magnitude is R~ 21 compared with USNO-B1.0 stars. No source was
detected down to the limiting magnitude at the position.

This message may be cited."