[vsnet-grb-info 9254] GRB 100511A, RIMOTS optical upper limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  10738
SUBJECT: GRB 100511A, RIMOTS optical upper limits
DATE:    10/05/11 19:11:25 GMT
FROM:    Arata Daikyuji at Miyazaki U  <daikyu524 at astro.miyazaki-u.ac.jp>

A.Daikyuji, N.Ohmori, Y.Nisioka, K.Noda, M.Yamauchi
(University of Miyazaki)

We have observed the field covering the error circle of
GRB GRB100511A (Swift trigger 421695)
with the unfiltered CCD camera on the 30-cm telescope
at University of Miyazaki.
The observation was started 14:19:42 UT, about two and
a half hours after the Swift 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.)
--------------------------------------------------------------
14:19:42 14:20:12 1 14.9
14:19:42 15:02:15 26 16.0
---------------------------------------------------------------