GCN Circular 867
Subject
GRB 001025 Optical Observations
Event
Date
2000-10-27T20:00:49Z (25 years ago)
From
Holger Pedersen at Copenhagen U Obs <holger@astro.ku.dk>
GRB 001025: Optical observations
J. P. U. Fynbo, P. Moller (ESO, Garching),
B. Milvang-Jensen (U. of Nottingham), I. Burud (U. of Liege),
M. I. Andersen (U. of Oulu), H. Pedersen, B. L. Jensen,
J. Hjorth (U. of Copenhagen), and J. Gorosabel (DSRI, Copenhagen),
on behalf of a larger collaboration report:
"We have obtained images covering the error box of GRB 001025
(Smith et al., GCN #861; Hurley et al., GCNs #863, 864) with the
1.54-m Danish Telescope (+DFOSC) on La Silla, the 8.2-m Antu
(VLT UT1) (+FORS1) on Paranal, and the 2.56-m Nordic Optical
Telescope (NOT) (+ALFOSC) on La Palma, as follows:
Start (UT) Tel. Filter Exp.time Seeing Lim.Mag
===================================================
Oct. 26.29 Dk-1.5m R 3x300s 1.4" ~22.5
Oct. 26.34 Antu R 10x200s 0.8" ~24.5
Oct. 27.20 NOT R 13x600s 1.7" ~23.2
Oct. 27.32 Antu R 8x200s 0.8" ~24.5
The limits are preliminary and based on USNO-A2.0 photometry.
Comparison of the images yields no significantly variable
objects down to R=24.5.
A section of the Antu Oct. 26.34 image is available at:
http://www.astro.ku.dk/~brian_j/grb/grb001025/ ."