TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3593
SUBJECT: GRB 050713b : Lulin R-band observations
DATE:    05/07/13 14:46:06 GMT
FROM:    Yuji Urata at RIKEN  <urata@crab.riken.go.jp>

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

" We have performed R-band imaging for the entire error region of GRB
050713b (Vaughan et al. GCN 3590) from 24 min after the burst with
Lulin 1-m telescope. No source was detected at position of the fading
X-ray source during our observation with following limiting magnitude
derived from the USNO-B1.0 catalogue.

UT      Exposure    Filter     Limiting 
Start   Time                      Magnitude 
12:31   300 s       R          21.2
12:37   300 s       R          21.6
12:43   300 s       R          21.3
12:49   300 s       R          21.6
12:54   300 s       R          21.6

This message may be cited."