Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 620

GRB 000326: Optical Observations
2000-03-28T09:14:35Z (24 years ago)
Brian Lindgren Jensen at U.of Copenhagen <>
B. L. Jensen, H. Pedersen, J. Hjorth (U. of Copenhagen) and
J. Gorosabel (DSRI, Copenhagen) report on behalf of a larger
European GRB consortium:

"Using the WFI at the ESO/MPI 2.2m telescope, La Silla,
we have obtained an R-band exposure of 600 s,
covering the whole of the IPN error-box of GRB 000326
(Hurley et al., GCN #618), on 2000 March 27.41 UT
(i.e. ~29 h after the GRB). The image was taken in
twillight, at airmass~2. No suitable flat-field is
currently available. The depth of this image is
comparable to DSS-2 (red). Seeing is FWHM~1.0".
The faintest objects are R~21.0, based on USNO-A1.0
photometry. We find no bright objects which are
not visible on DSS-2 (red).

At the position of the bright radio source found by
Frail (GCN #619), we find a faint, unresolved object.
A preliminary magnitude of this object (USNO-A1.0) is
R:20.6+-0.3. This object is not seen on DSS-2 (red), 
but this may be due to a nearby, brighter star. The
position (USNO-A1.0) of the object is (J2000)
RA=22:11:22.01, Dec=-26:07:35.8, 1" uncertainty.
Further observations are necessary to determine whether
this object is related to GRB 000326. 

At the positions of the two faint radio-sources mentioned
by Frail, we find no optical sources.

Sections of the image will be made available at:

We acknowledge the helpful assistance of P. Francois,
at ESO/La Silla."
Looking for U.S. government information and services? Visit