[vsnet-grb-info 6687] GRB080922, optical upper limit

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  8289
SUBJECT: GRB080922, optical upper limit
DATE:    08/09/25 08:27:02 GMT
FROM:    Ryuuji Hara at U of Miyazaki  <ryuu55 at astro.miyazaki-u.ac.jp>

R. Hara, H.hayasi, N.Ohmori, K.Kono H. Tanaka, M.Yamauchi, E.Sonoda,
(University of Miyazaki)

We have observed the field covering the error circle of
GRB080922 (GCN 8281, S.Mereghetti et al.) with
the unfiltered CCD camera on the 30-cm telescope at
University of Miyazaki.
The observation was started 11:14:04 UT, 11.7min
after the INTEGRAL trigger time.

We have compared our data of 30 sec exposures
with the USNO-A2.0 catalog,there is no new source
at the reported position.

the upper limits are as follows:
--------------------------------------------------------------
Start(UT) End(UT) Num. of frames Limit (mag.)
--------------------------------------------------------------
11:15:19  11:15:49      1        16.7
11:15:19  11:41:35      20       17.1
---------------------------------------------------------------

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ryuu55 at astro.miyazaki-u.ac.jp
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