GCN Circular 276
Subject
GRB990316 - Optical null results
Date
1999-03-17T14:59:23Z (25 years ago)
From
Elia Leibowitz at Wise Obs, Tel Aviv U <elia@wise.tau.ac.il>
P. Ibbetson, E.O. Ofek and E.M. Leibowitz report:
On March 16 1999, some 7.5 hours after the outburst of GRB990316 (Trigger Num.
7475), using the 1 m telescope of the Wise Observatory, we have taken 5 CCD
frames of 900 seconds exposure and FOV of 11x11 arcmin^{2} each, through an R
filter. Together they cover a square box of nearly 0.3x0.3 deg^{2} around
RA=10:06:16 Dec=-05:13:31 (J2000), at the mean UT 17:34. We have not
identified any new object relative to the corresponding DSS images, up to a
limiting magnitude of 19.5. Within a box of 11x11 arcmin^{2} around the
central point the limiting magnitude is 19.9.