GCN Circular 267
Subject
GRB 990217 Optical Observations
Date
1999-02-26T16:07:14Z (25 years ago)
From
Holger Pedersen at Copenhagen U Obs <holger@astro.ku.dk>
K. Pedersen (Danish Space Research Institute, Copenhagen),
J. Hjorth, H. Pedersen (Copenhagen University Observatory), and
A.O. Jaunsen (Institute for Theoretical Astrophysics, Oslo) report:
We have observed the field of GRB 990217 (Tarei et al., IAUC 7110),
using the DFOSC instrument on the 1.54-m Danish telescope at
La Silla. All exposures were done in the R band. The field
covered was 13.6 x 13.6 arcminutes, hence significantly larger
than the BeppoSAX error circle.
UTC (mid exposure) Exp. Seeing (fwhm) Limit
1999 Feb 19.049 1200 s 1.4" < 23.1
1999 Feb 20.034 1000 s 1.4" < 23.0
1999 Feb 24.037 600 s 1.2" < 22.8
Intercomparison of the exposure shows no variable object.