GCN Circular 3912
Subject
GRB050904: P60 Observations
Date
2005-09-04T07:58:41Z (19 years ago)
From
Derek Fox at PSU <dfox@astro.psu.edu>
Derek B. Fox (Penn State) and S. Bradley Cenko (Caltech) report on
behalf of a larger collaboration:
"We have imaged the BAT and XRT localization region for GRB050904
(Swift Trigger 153514; Cummings et al., GCN 3910) in a series of
exposures with the Palomar Robotic 60-inch Telescope (P60). At the
following mean epochs, and to the following limits in R- and i-band,
we identify no new sources within the XRT localization region in our
coadded images:
Time (UT) Delta Limit (mag)
===================================
05:25 +3h33m R > 20.8
05:41 +3h49m i > 19.7
===================================
Our photometric calibration is performed against the USNO-B1.0 catalog
R-band and I-band magnitudes for this field for our R- and i-filter
images, respectively.
Our observations of this field are continuing."