[vsnet-grb-info 6050] GRB 080506: Optical observation with
KANATA/TRISPEC
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Wed May 7 05:56:48 JST 2008
TITLE: GCN CIRCULAR
NUMBER: 7686
SUBJECT: GRB 080506: Optical observation with KANATA/TRISPEC
DATE: 08/05/06 20:56:40 GMT
FROM: Koji Kawabata at HASC,Hiroshima U <kawabtkj at hiroshima-u.ac.jp>
K. S. Kawabata, M. Sasada, M. Uemura, T. Yamashita and T. Ohsugi
(Hiroshima Univ.) and R. G. Lundock (Tohoku Univ.) report on behalf
of KANATA/TRISPEC observation team:
We performed a series of simultaneous optical(Rc) and NIR (J, Ks)
imaging observations for the optical counterpart associated with
GRB 080506 (Baumgartner et al, GCN 7685) using TRISPEC attached to
the 1.5-m KANATA telescope. Our quick-look analysis showed that Rc
magnitude of the counterpart was 17.5 at 220 sec after the BAT
trigger. It then faded and reached 19.5 at ~5050 sec. We used USNO
A2.0 1275-16800533 (R=15.1) and 1275-16801542 (R=15.1) stars for
comparison. Further analysis is ongoing.
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