TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  867
SUBJECT: GRB 001025 Optical Observations
DATE:    00/10/27 20:00:49 GMT
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/ ."