GRB 980329
Detection of the I-band GRB afterglow
The following IAUC was submitted (IAU Circ. 6864):
"I-band images obtained on March 29.8 - 30.0 UT,
using the
Tautenburg Schmidt telescope equipped with the Schmidt
focus CCD camera, show an object with magnitude of about
I = 20 (estimated, not measured) at the position of the fading radio
source reported by Taylor et al. (GRB Coordinate Network Circular #40;
see
http://gcn.gsfc.nasa.gov/gcn/gcn3_archive.html)
at R.A. = 7h02m38s, Decl. = 38o50'44" (+/- 1", equinox 2000.0).
This object was no more visible on I-band images taken on
March 31.8 - 31.9 UT with the Tautenburg telescope (I > 21).
It was also not found on an I-band image taken on April 1.85 UT
with the Calar Alto 2.2-m telescope equipped with CAFOS (I >
21). No R-band counterpart of this
object is seen on Tautenburg images taken on March 29.8 - 30.0 UT
(R > 22)."
Left: R-band image taken on March 29.8 UT (combination of
7 frames a 120 sec integration time).
Right: R-band image taken on March 30.0 UT (combination of
22 frames a 120 sec integration time).
The pixel scale is 1.2 arcsec/pixel.
The circle approximately represents the BeppoSAX error circle
(radius 60 arcsec) reported by J. in 't Zand et al. (IAUC 6854).
I-band image taken on March 29.8 UT (combination of
7 frames a 120 sec integration time).
Right: I-band image taken on March 30.0 UT (combination of
22 frames a 120 sec integration time).
The object mentioned above is indicated.
I-band image taken on April 01.85 UT using the
Calar Alto 2.2-m telescope (CAFOS). The transient source
is no more visible.
Any use of these data should be accompanied by a reference.
Comments are welcome.
S. Klose, H. Meusinger, and H. Lehmann,
Thüringer Landessternwarte Tautenburg.
Last modified: April 05, 1998