GCN Circular 5041
Subject
GRB 060501: ROTSE-III Optical Limits
Date
2006-05-01T09:19:00Z (18 years ago)
From
Eli Rykoff at U of Michigan/ROTSE <erykoff@umich.edu>
E.S. Rykoff (U Mich), B. E. Schaefer (Louisiana State), S.A. Yost (U
Mich), R. Quimby (U Texas), report on behalf of the ROTSE collaboration:
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB
060501 (Swift trigger 208050, GCN 5040), producing usable images
beginning 92 s after the GCN notice time. An automated response took the
first image at 08:22:4.6 UT, 426 s after the burst, under fair
conditions with high airmass. We took 7 20-s exposures before bad
weather forced the system to close. 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. Individual images have limiting magnitudes ranging
from 16.3-16.4; we set the following specific limits.
start UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd?
--------------------------------------------------------------------
08:22:04.6 08:22:24.6 20 16.4 426 N
08:22:04.6 08:25:29.4 140 17.4 426 Y