GCN Circular 5532
Subject
GRB 060906: KAIT observations
Date
2006-09-06T11:04:31Z (18 years ago)
From
Weidong Li at UC Berkeley KAIT/LOSS <weidong@astron.berkeley.edu>
W. Li and J. Bloom (University of California, Berkeley), on behalf
of the KAIT GRB team, report:
The robotic 0.76-m Katzman Automatic Imaging Telescope (KAIT)
at Lick Observatory observed GRB 060906, detected with Swift
(Trigger 228316; Racusin et al. GCN 5528). The automatic sequence
started at 08:34:32, 106 s after the burst. In a 15 s unfiltered
image, no afterglow candidate is detected to a limiting magnitude
of 18.2 (from comparison with the USNO B1.0 catalog). We detected
the optical afterglow reported by Cenko et al. (GCN 5529, 5531)
in a 45 s unfiltered image started at 336 s after the burst, with
the following precise (+/- 0.2") position:
RA = 2:43:00.84 Dec = +39:21:41.9 (J2000.)
A table of photometry (3-sigma limits and detections) is reported
below.
======================================================================
Start UT t(GRB) Filter Exp(s) 3sigma-limit detection
08:34:32 106s clear 15.0 <18.2
08:35:07 141s V 15.0 <16.7
08:35:33 167s I 15.0 <17.5
08:35:59 193s clear 20.0 <18.4
08:36:30 224s V 45.0 <17.3
08:37:27 281s I 45.0 <18.3
08:38:22 336s clear 45.0 18.9 +/- 0.3
========================================================================