[vsnet-grb-info 3222] GRB 060502B: Xinglong optical observation

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5057
SUBJECT: GRB 060502B: Xinglong optical observation
DATE:    06/05/02 20:40:39 GMT
FROM:    W.K. Zheng at NAOC  <zwk at bao.ac.cn>

M.Zhai, Y.L. Qiu, J.Y. Wei, J.Y. Hu, J.S. Deng(NAOC),X.F. Wang (THCA), 
K.Y. Huang (NCU), Y. Urata (Saitama Univ.) 
on behalf of EAFON report:

"We have imaged the field of  GRB 060502B (Troja et al. GCN 5055) with
clear, R and I band  using the  0.8m  telescope  at  Xinglong Observatory. 
 First imaging was started from 305 s after the trigger.  The limiting
magnitude is  clear = ~  20 (12 min  after) and R=20.6 (60  min after)
derived  from  USNO-B1.0 r  catalog.   No  new  source was  detected
brighter than the limits in the XRT error circle.

Further analysis is in progress."

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