GCN Circular 4737
Subject
GRB 060211: ROTSE-III Optical Limits
Date
2006-02-11T10:43:25Z (18 years ago)
From
Wiphu Rujopakarn at U Michigan/ROTSE <wiphu@umich.edu>
W. Rujopakarn (U Mich), E.S. Rykoff (U Mich), B. E. Schaefer (Louisiana
State), F. Yuan (U Mich), S.A. Yost (U Mich), report on behalf of the
ROTSE collaboration:
ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded
to GRB 060211 (Hurkett et al., GCN 4736), producing images beginning
6.2 s after the GCN notice time. An automated response took the first
image at 09:41:38.2 UT, 147.2 s after the burst, under twilight
conditions. We took 10 5-sec, and 100 20-sec exposures. These
unfiltered images are calibrated relative to USNO A2.0 (R).
Comparison to the DSS (second epoch) reveals no new sources within the
3-sigma error circle, for both single images and coadding into sets of
10. Individual images have limiting magnitudes ranging from 14.0-16.2;
we set the following specific limits.
start UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd?
--------------------------------------------------------------------
09:41:38.2 09:41:43.2 5 14.3 147.2 N
09:41:38.2 09:43:51.7 133 15.7 147.2 Y
09:44:00.9 09:48:44.2 283 16.1 289.9 Y