[vsnet-grb-info 4705] GRB 070521, optical observation
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Tue May 22 19:20:12 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 6453
SUBJECT: GRB 070521, optical observation
DATE: 07/05/22 10:20:04 GMT
FROM: Shouta Maeno at U.of Miyazaki <shouta at astro.miyazaki-u.ac.jp>
S.Maeno, R.Hara, H.Tanaka, E.Sonoda, M.Yamauchi
(University of Miyazaki)
We have observed the field of GRB 070521 (GCN 6431) with
the unfiltered CCD camera on the 30-cm telescope at University of Miyazaki.
The observation was started from 11:47:35 UT
on May 21(4.9 h after the trigger).
After co-adding a set of 32 images (11:47:35 - 12:46:04 UT) of 30 sec
exposures, we have compared with the USNO A2.0 catalog.
Preliminary analysis shows there is no new source brighter
than 17.8mag.
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