[vsnet-grb-info 329] GRB 020813 : KISO multiband optical observations

[GCN Circulars <gcncirc@lheawww.gsfc.nasa.gov>]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  1485
SUBJECT: GRB 020813 : KISO multiband optical observations 
DATE:    02/08/14 05:36:36 GMT
FROM:    Yuji Urata at RIKEN  <urata@crab.riken.go.jp>

Y. Urata (1,2), T. Miyata (3), S. Nishiura (3), Y. Nakata (3), T. Aoki
(3), T. Soyano (3), K. Tarusawa (3), H. Mito(3), A. Yoshida (1,4), 
T. Tamagawa (1) 
1: RIKEN, 2: Titech, 3: Tokyo Univ. 4:AGU

 We have observed the optical transient (OT) of GRB020813 (Fox, Blake
& Price, GCN #1470) with the KISO observatory 1.05 m Schmidt
telescope.  We obtained four data sets for each B,V,R,I band during
2002 Aug. 13 10:52 to 16:46 UT.

 We detected the OT in the first data set of B (11:58-12:17 UT) ,
R(10:52-11:11 UT), I (11:14-11:33 UT). Due to the bad weather
condition, we could not detect it in V band. A preliminary analysis
suggests that the OT is at R=19 in comparison with the USNO-A2.0 star
(U0675_34232257).  Analysis of the full data set is underway.

These images can be found at
http://cosmic.riken.go.jp/urata/GRB/GRB020813/ .

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