GCN Circular 5504
Subject
GRB 060904B: ROTSE-III Detection of Optical Counterpart
Date
2006-09-04T02:45:01Z (18 years ago)
From
Eli Rykoff at U of Michigan/ROTSE <erykoff@umich.edu>
E.S. Rykoff (U Mich), W. Rujopakarn (U Mich), F. Yuan (U Mich), report
on behalf of the ROTSE collaboration:
ROTSE-IIIc, located at the H.E.S.S. site at Mt. Gamsberg, Namibia,
responded to GRB 060904B (Swift trigger 228006). The first image was at
02:31:22.4 UT, 18.5 s after the burst (5.3 s after the GCN notice time).
The unfiltered images are calibrated relative to USNO A2.0. We detect a
17.3 magnitude, brightening source with coordinates:
03:52:50.52 -00:43:30.85 (J2000)
start UT mag mlim(of image)
----------------------------------
02:31:22.4 17.3 18.1
A jpeg image is available at
http://www.rotse.net/images/gsb228006_3c011-020_key.jpg
Continuing observations are in progress.
[GCN OPS NOTE(04sep06): Per author's request the 060904A was changed to B.]