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GCN Circular 2868

GRB041219: Prompt Optical Observations from ROTSE-IIIb
2004-12-19T04:11:28Z (19 years ago)
Eli Rykoff at Univ. of Michigan/ROTSE <>
E. Rykoff (U. Michigan) and R. Quimby (U. Texas) report on behalf of the ROTSE

ROTSE-IIIb, located at McDonald Observatory, Texas, responded automatically to
INTEGRAL trigger #2073, GRB041219.  Our first 5-s exposure started at 01:44:11.6
UT, 74 seconds after the start of the GRB, and 6 seconds after the trigger, and
during the GRB itself (GCN 2866).  Our unfiltered images were calibrated
relative to USNO A2.0. Comparison to DSS reveals no new sources to a limiting
magnitude of around 17.2.  Due to the low galactic latitude, field crowding is
a significant issue. Imaging is ongoing.
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