GCN Circular 7470
Subject
GRB 080319B: ROTSE-III Observations of Optical Counterpart
Event
Date
2008-03-20T01:07:48Z (18 years ago)
From
Heather Swan at U.of Michigan/ROTSE <hflewell@umich.edu>
H. Swan (U Mich), F. Yuan (U Mich), W. Rujopakarn (Steward)
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB
080319B (Swift trigger 306757; Racusin et al., GCN 7427) and began
imaging at 06:13:11.06 UT (5.3 sec after the GCN notice time) under
suboptimal conditions, because of condensation present on the CCD.
Observations continued until about 5 hours after the trigger. This
condensation made the analysis very difficult, but we detect the OT
first reported in GCN 7428. Further analysis is ongoing. These
unfiltered images are calibrated to the USNO B1.0 R2 catalog.
start UT end UT mag mlim(of image)
06:13:11.06 06:13:16.06 5.35 9.8
06:14:30.66 06:14:50.66 8.49 13.0