GCN Circular 11462
Subject
GRB 101219A: ROTSE-III Optical Limits
Date
2010-12-19T03:05:57Z (13 years ago)
From
Shashi Bhushan Pandey at ROTSE <shaship@umich.edu>
S. B. Pandey (U Mich), W. Zheng (U Mich) and W. Rujopakarn (Steward),
report on behalf of the ROTSE collaboration:
ROTSE-IIIc, located at the H.E.S.S. site at Mt. Gamsberg, Namibia,
responded to GRB 101219A (Swift trigger 440606; Gelbord J. M., GCN 11461),
producing images beginning 8.1 s after the GCN notice time. An automated
response took the first image at 02:31:48.0 UT, 12.0 s after the burst,
under fair conditions. We took 10 5-sec, 10 20-sec and 10 60-sec exposures.
These unfiltered images are calibrated relative to USNO A2.0 (R). Imaging
is on going.
Comparison to the DSS (second epoch) reveals no new sources within the
3-sigma Swift/BAT error circle or the XRT error circle, for both single
images and coadding into sets of 10. Individual images have limiting
magnitudes ranging from 15.7-17.2; we set the following specific limits.
start UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd?
--------------------------------------------------------------------
02:31:48.0 02:31:53.0 5 15.7 12.0 N
02:31:48.0 02:33:04.1 76 17.2 90.0 Y