TITLE:   GCN CIRCULAR
NUMBER:  4231
SUBJECT: GRB 051109B : Lulin Optical Observations
DATE:    05/11/09 17:49:40 GMT
FROM:    Yuji Urata at RIKEN  <urata@crab.riken.go.jp>

GRB 051109B : Lulin Optical Observations

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

"The R and V band images of GRB 051109B (Tagliaferri et al. GCN 4222)
were taken by Lulin 1-m telescope. The observation are started at 1.51
hours after the burst.  No new source was detected at Swift/UVOT
position (Tagliaferri et al. GCN 4222) and Swift/XRT (Campana et
al. 4226) error regions. Compare with USNOB1.0 stars, the limiting
magnitudes of our R and V band co-add images (300s x 3 for each band)
are estimated as 21.0 and 20.0, respectively.

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