[vsnet-grb-info 3979] GRB 061110: ROTSE-III Optical Limits
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Fri Nov 10 21:37:26 JST 2006
TITLE: GCN CIRCULAR
NUMBER: 5796
SUBJECT: GRB 061110: ROTSE-III Optical Limits
DATE: 06/11/10 12:37:16 GMT
FROM: Brad Schaefer at LSU <schaefer at grb.phys.lsu.edu>
B. E. Schaefer (Louisiana State), E.S. Rykoff (U Mich), F. Yuan (U Mich),
W. Rujopakarn (U Arizona), report on behalf of the ROTSE collaboration:
ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded to
GRB 061110A (Swift trigger 238108), producing images beginning 8.8 s after
the GCN notice time. An automated response took the first image at
11:48:04.9 UT, 43.6 s after the burst, under fair conditions. We took 10
5-sec, 10 20-sec and 10 60-sec eposures. 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 BAT error circle and also within the XRT error circle, for both
single images and coadding into sets of 10; the field is not crowded.
Individual images have limiting magnitudes ranging from 14.3-17.1; we set
the following specific limits.
start UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd?
--------------------------------------------------------------------
11:48:04.9 11:48:09.9 5 16.2 43.6 N
12:07:54.0 12:17:13.9 559 17.5 1232.7 Y
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