GCN Circular 2379
Subject
XRF030824: Optical observations
Date
2003-09-04T18:42:16Z (21 years ago)
From
Arto Oksanen at Nyrola Obs., Finland <oksanen@nyrola.jklsirius.fi>
A. Oksanen on behalf of the Nyrola Observatory GRB Team
and the AAVSO International High Energy Network reports:
Total of five 24 x 16 arcmin fields covering most of the HETE WXM error
circle of XRF030824 (HETE 2821) was imaged with the 0.4m SCT at the
Nyrola Observatory starting at August 24, 2003 20:40 UT, 4.0 hours after
the inital burst under varying sky conditions (some clouds and haze).
Total of 22 240s Rc-exposures were combined and compared to
the Digitized Sky Survey (DSS2R).
No new objects were found to the image limits of R = 17.5 - 19.0.
Field mid UT exposure limiting R mag
------------------------------------------------
XRF030824 20:50 5 x 240s 19.0
XRF030824NE 21:15 3 x 240s 18.5
XRF030824NW 21:35 5 x 240s 17.5 (clouds)
XRF030824SE 22:01 5 x 240s 19.0
XRF030824SW 22:24 4 x 240s 19.0
------------------------------------------------
The final combined images are available on the web with an image
showing the error circle and the sky coverage of each field:
http://nyrola.jklsirius.fi/grb/xrf030824/
The AAVSO International High Energy network is grateful for a
generous grant from the Curry Foundation and to NASA for the
financial support for the High Energy Workshops for Amateur
Astronomers.