GCN Circular 925
Subject
GRB010126 Optical Observations
Date
2001-01-29T13:14:56Z (24 years ago)
From
Holger Pedersen at Copenhagen U Obs <holger@astro.ku.dk>
H. Pedersen, J. Hjorth, B. L. Jensen (U. of Copenhagen),
M. I. Andersen (University of Oulu), J. P. U. Fynbo (ESO, Garching),
J. Gorosabel (DSRI, Copenhagen), A. A. Kaas (Nordic Optical Telescope),
L. Takalo, and R. Rekola (Tuorla Observatory), report on behalf of a
wider collaboration:
GRB010126 Optical Observations
------------------------------
"Using the 2.56-m Nordic Optical Telescope (+ALFOSC), La Palma, we have
obtained a total of eight images which cover the error box (Hurley, GCN 922)
by means of four consecutive pointings:
UT Filter Exp.time Seeing
===========================================================
2001 January 27.21 R (4 x ) 180 s 0.85" FWHM
2001 January 28.13 R (4 x ) 180 s 0.90" FWHM
Intercomparison of the images has revealed no candidate counterpart
to magnitude ~22.5 .
The object reported by Bartolini et al. (GCN 924) is detected on two
overlapping exposures, i.e. 360 s, at each epoch. Using the nearby USNO
star U1350_08031605 as reference, we find R = 21.17 +/- 0.20 (epoch 1) and
R = 21.29 +/- 0.20 (epoch 2), i.e. consistent with no variability."