srclist overlap message for exposure 1 of trigger 176818
uvot_overlap.pl vrs. 2006-11-27 fem started at 061207d18h51m40sUT
The observation of trigger 176818 started 2006-01-11T04:24:18.7
Examining file ./176818_o71_v62_uvot_sky_srclist.fits
The exposure ID is 158646258
The exposure time is undefined.
The filter is V.
The uvot region is centered at (276.2030,37.6041) with a roll angle of 162.8
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (276.2120,37.6020) with a radius of 3.000 arc min
This is 0.446 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The uvot/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (276.2040,37.6059) with a radius of 0.097 arc min
This is 0.121 arc min from the center of the uvot region
The area of the XRT error circle is 0.029 sq. arc min
The uvot/XRT overlap is 0.029 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 176818
find_uvot_ag.pl vrs. 2006-09-28 fem started at 061207d18h51m41sUT
Observation start time is 2006-01-11T04:24:18.7
Examining file ./176818_o71_v62_uvot_catalog_srclist.fits
The exposure ID is 158646258
The filter is V
There are 91 detected source(s) for 176818_o71_v62
*** WARNING -- access to gsc2.2 catalog failed.
*** WARNING -- bright star catalog has 1 entries brighter than 12 mag
The brightest has mag 11.58864
Mean distance difference (CAT_DELTA) for matched entries is 0.490" for 176818_o71_v62
Mean and std. dev of mag. difference (MAG_DELTA) are 0.387 and 0.468 for 176818_o71_v62
Found 3 entries without IDs and 0 entries that are acceptable afterglow candidates for 176818_o71_v62.
Acceptable entries have no ID, XRT distances < 8", and are > ~(80 - 10*(mag-6))" from any bright star.
Magnitude criteria will be applied later.
BAT distances are from RA=276.2120 (18:24:50.88) DEC=37.6020 (+37:36:07.2)
XRT distances are from RA=276.2040 (18:24:48.96) DEC=37.6059 (+37:36:21.2)
Found NO acceptable entries.
Unidentified entry closest to XRT position is no. 40:
ra=276.1411 dec= 37.6084 mag=17.6 dist=179.7 REFID=70
There are 0 star(s) in the USNOB1 catalog within 10" of the XRT position.
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, mag between 9.01 and 18.00, XRT distances < 8",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 176818
------ Start for Possible Stand-alone Circular ----
In response to GRB060111 (Swift/BAT trigger 176818) at 04:23:06.12 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 200 seconds with the V filter starting 72
seconds after the BAT trigger. No afterglow candidate has been found in the
initial data products. The 2.7'x2.7' sub-image covers 25% of the BAT error
circle. The typical 3-sigma upper limit has been about 18.5 mag. The 8'x8'
region for the list of sources generated on-board covers 100% of the XRT error
circle. The list of sources is typically complete to about 18.0 mag. No
correction has been made for the expected extinction of about 0.1 magnitudes.
------- notes for trigger 176818 ------
uvot_gcn_auto.pl vrs. 2006-11-20 fem at 061207d18h51m42sUT
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/176818/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. No XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 158646258.7305 or 2006:011:04:24:17 UT
Access to GSC star catalog FAILED. This increases the odds of a FALSE afterglow
detection.
Found 845 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 91 sources in
srclist catalog. Found 3 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.00 mag.
Found 10 source(s) in Genie image catalog. Found 0 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Found
139 stars in largest star catalog for Genie image region. The stars will
eliminate afterglows from about 14% of the Genie image region.
Found no Genie image background information.
There are 0 catalogued stars within 10 arc sec. of XRT position.
All AG candidates sorted by magnitude for the current finding chart.
(V/White SRCLIST mags < 17.5/18.5 are reliable. Mag > 18.5/19.5 are not.
Others are uncertain.)
(V/White Genie image mags < 18.0/19.0 are reliable. Mag > 19.0/20.0 are not.
Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC-- -MAG/Limit Dist(") Source Asp.Corr?
158646258 72 V srclist found no candidates.
158646258 72 V image found no candidates.
List afterglow candidates for other finding charts.
No unique and reliable afterglow was found.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: v
GRB_DEC: 37.60590
GRB_ERROR: 8
GRB_RA: 276.20400
IMAGE_START_TIME: 04:24:17
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT