[AAVSO-HEN] GRB 080810 : optical observation with KANATA

[grb at aavso.org]

The following is a GCN Circular circulated via the AAVSO network.
For an archive and more information on circulars visit:
http://lheawww.gsfc.nasa.gov/docs/gamcosray/legr/bacodine/gcn3_archive.html

TITLE:   GCN CIRCULAR
NUMBER:  8081
SUBJECT: GRB 080810 : optical observation with KANATA
DATE:    08/08/10 13:51:42 GMT
FROM:    Akira Arai at Hiroshima U  <arai-akira at hiroshima-u.ac.jp>

Y. Ikejiri, M. Uemura, T. Ohsugi, K. Kawabata, A. Arai, M. Yamanaka, and K. Sakimoto (Hiroshima Univ.), 
report on behalf of the KANATA GRB team:

  We performed optical-NIR observations of the field of 
GRB 080810 (GCN Circ. 8080) with TRISPEC attached to 
the "KANATA" 1.5-m telescope.  

  We confirmed a very bright, fading object at the position of the optical 
afterglow detected with UVOT.  
Our preliminary results are below:

time(UT)       mag.              exposure_time
Aug. 2008                        (sec)
10.553258      13.7  $B!^(B 0.1  V  33sec * 1

Comparison star: 
23:46:58.51 +00:18:30.2 V=14.07 (NOMAD)
 
Further observation and analysis are ongoing.