GCN Circular 192
Subject
GRB981220, Optical Observations
Date
1999-01-11T10:10:55Z (25 years ago)
From
Holger Pedersen at Copenhagen U Obs <holger@astro.ku.dk>
H. Pedersen, B. Lindgren, J. Hjorth (University of Copenhagen),
M. I. Andersen (Nordic Optical Telescope),
A. O. Jaunsen (University of Oslo),
J. Sollerman (Stockholm Observatory), and
J. Smoker, C. Mooney (Queens University, Belfast) report:
"Images of GRB 981220 (GCN 159, 160), including the position
of the proposed radio counterpart (Galama et al., GCN 168;
Frail and Kulkarni, GCN 170) were obtained with the 2.5-m
Nordic Optical Telescope, La Palma, on 1998 Dec 22.927 UT
(900 sec, R, FWHM = 1.4"), and with the 1.5-m Danish telescope,
La Silla, on 1998 December 23.110 UT (300 sec, R, FWHM = 1.3").
No optical source was detected at the position of the radio source.
The upper limits for 3-sigma detections are m(R) > 23.8 on
December 22.927, and m(R) > 23.0 on December 23.110.
This message can be cited in publications."