[vsnet-grb-info 5012] GRB070808: Optical observations with KANATA

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6721
SUBJECT: GRB070808: Optical observations with KANATA
DATE:    07/08/08 19:42:51 GMT
FROM:    Makoto Uemura at Hiroshima U  <uemuram at hiroshima-u.ac.jp>

M. Uemura, A. Arai, M. Sasada, M. Isogai, T. Uehara (Hiroshima Univ.),
and D. Nogami (Kyoto Univ.) report on behalf of the KANATA GRB team:

  We started optical imaging of the field of GRB070808 (GCN 6718) 
at 18:29:38 UT 8 Aug. using TRISPEC attached to the KANATA 
1.5-m telescope at Higashi-Hiroshima Observatory, Japan.  
Exposure times for Rc-band images are 30 sec.  

No new object was significantly detected.  
In our first image, a limit magnitude was estimated from 
neighbour USNO A2.0 stars as below:

18:29:53 UT 8 Aug.  20.5  Rc  

Follow-up observations are ongoing.