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GCN Circular 5547

GRB 060904A : Optical limit
2006-09-08T11:53:10Z (18 years ago)
Yuji Urata at Saitama U <>
H. Mito, T. Soyano, (Tokyo Univ.) and Y. Urata (Saitama Univ.)
on behalf of EAFON report:

"We have observed the position of X-ray afterglow using Kiso 1.05m
Schmited telescope.  The observation was started at 10:20 UT September
4, 2006. The combined image from 20 frames taken with 300 sec exposure
shows no optical afterglow associated with the X-ray afterglow
position brighter than 22.4 (R) mag.

  Start time  Exposure            Limit(SN=3)
  10:20       300 sec x 20 frame  > 22.4

This message may be cited."
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