GCN Circular 8697

Subject

GRB081222, optical observation

Event

Date

2008-12-22T13:43:55Z (17 years ago)

From

Norisuke Ohmori at Miyazaki U <ohmori@astro.miyazaki-u.ac.jp>

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


 We have observed the field covering the error circle of
GRB081222 (Swift trigger 337914, Grupe et al., GCN 8691Loading...
 
 ) 
with the unfiltered CCD camera on the 30-cm telescope 
at University of Miyazaki.
The observation was started 08:41:19 UT, about 3.78 hr
after the Swift trigger time.
We have compared our data of 30 sec exposures
with the USNO-A2.0 catalog,
the upper limits are as follows:
--------------------------------------------------------------
Start(UT)   End(UT)    Num. of frames    Limit (mag.)
--------------------------------------------------------------
10:36:04    10:36:19          1            ~16
10:36:04    10:49:52         12            ~17
---------------------------------------------------------------