[vsnet-grb-info 4403] GRB 070306, optical observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6184
SUBJECT: GRB 070306, optical observation
DATE:    07/03/09 16:31:09 GMT
FROM:    Shouta Maeno at U.of Miyazaki  <shouta at astro.miyazaki-u.ac.jp>

S.Maeno, E.Sonoda, R.Hara, H.Tanaka, K.Tanaka, T.Matsumura, M.Yamauchi
(University of Miyazaki)


We have observed the field covering the error region of
GRB 070306 (GCN 6169) with the unfiltered CCD camera on
the 30-cm telescope at University of Miyazaki.
The observation was started from 16:43:36 UT on Mar. 6
(128 s after the trigger).

We have compared our data of 30 sec exposures
with the USNO-A2.0 catalog.
There is no new source at the XRT position(GCN 6172).

The upper limit is as follows:
--------------------------------------------------------------
Start(UT)	End(UT)	    Num. of frames	Limit (mag.)	
--------------------------------------------------------------
16:43:36	16:44:06	1		~15.8
16:45:24        16:59:40        9               ~17.0
---------------------------------------------------------------