GCN Circular 4595
Subject
GRB060123: Optical and IR Imaging
Event
Date
2006-01-25T12:10:50Z (20 years ago)
From
Josh Bloom at UC Berkeley <jbloom@astron.berkeley.edu>
J. S. Bloom, F. Marchis (UCB), K Smalley, E. E. Falco, C. Blake
(CfA), N. Bulter, and R. Foley (UCB) report:
"With high winds and poor transmission on Mt. Hopkins we observed the
field of GRB 060123 (Palmer et al., GCN 4584) both with the PAIRITEL
1.3m and the 48" telescope equipped with Keplercam. At time 25.3 Jan
2006 UT we find no significantly new source in i, z, J, H, Ks within
the XRT error circle when compared with SDSS (Cool et al. GCN 4585).
Imaging in I and z' under better conditions at the Lick 3m + PFCam on
Mt. Hamilton began at 25.3 Jan 2006 UT: analysis is still in progress
but we confirm the conclusion of Cenko et al. (GCN 4594) that there
is no evidence for a new optical source to the SDSS limits. We do
note that there is a faint (z_AB = 19.87 mag) apparent galaxy (SDSS
J115847.6+453050.8) on the northern outskirts of the 90% containment
XRT error circle at J2000: 11:58:47.59, +45:30:50.8."
A SDSS-PAIRITEL-PFCam triptych may be found at:
http://astro.berkeley.edu/~jbloom/grb060123.ps