GCN Circular 1900
Subject
GRB030227: Kiso optical observations
Event
Date
2003-02-27T17:19:43Z (23 years ago)
From
Yuji Urata at RIKEN <urata@crab.riken.go.jp>
H. Izumiura (OAO)
T. Aoki, Y. Urata on behalf of the KISO GRB Team report:
"We have observed the entire error circle of GRB030227 (Gotz et
al. GCN1895, 1896) with Kiso 1.05 Schmidt telescope starting at Feb
27. 10:43 UT (2.1 h after the burst). Multi band images were taken
with 2k x 2k CCD camera (50' x 50' field of view).
Our data;
Date Time (UT) Exposure Limiting mag.(R, SN=3)
02-27 10:43-10:48 300sec 20.3
02-27 12:44-12:54 600sec 20.9
From a comparison with the DSS-2 images we did not identify any new
point source for the GRB down to the limiting magnitude. Limiting
magnitudes were estimated by comparison with USNO-A2.0 red magnitudes
of many field stars. We also could not identify any variable objects
in the region using a PSF matched image subtraction method.
In our first frame, a minor planets Busch was located in the error
circle."
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