srclist overlap message for exposure 2 of trigger 176818
uvot_overlap.pl vrs. 2006-11-27 fem started at 061207d18h54m50sUT
The observation of trigger 176818 started 2006-01-11T04:27:45.5
Examining file ./176818_o278_v57_uvot_sky_srclist.fits
The exposure ID is 158646465
The exposure time is undefined.
The filter is B.
The uvot region is centered at (276.2046,37.6057) 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 0.414 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 0.033 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 2 of trigger 176818
find_uvot_ag.pl vrs. 2006-09-28 fem started at 061207d18h58m07sUT
Observation start time is 2006-01-11T04:27:45.5
Examining file ./176818_o278_v57_uvot_catalog_srclist.fits
The exposure ID is 158646465
The filter is B
There are 83 detected source(s) for 176818_o278_v57
*** 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 0.544" for 176818_o278_v57
Mean and std. dev of mag. difference (MAG_DELTA) are 1.135 and 0.696 for 176818_o278_v57
Found 1 entries without IDs and 1 entries that are acceptable afterglow candidates for 176818_o278_v57.
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)
Source list entry 52 is a candidate afterglow for 176818_o278_v57 with 3x3 stamp
ra=276.2437 (18:24:58.49) dec=37.5565 (+37:33:23.3) mag=19.2 dist=211.0 REFID=83
*** The position of this source is inconsistent with the XRT position.
The position is 185.9 arc sec from the BAT position.
Found 9 entries in star catalog(s) within 30.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
276.2405 37.5575 9.9 -1 USNO-B1 17.63 17.03 17.30
276.2411 37.5568 7.7 89 USNO-B1 16.52 14.81 15.57
276.2419 37.5564 5.2 90 USNO-B1 14.94 13.68 14.24
276.2423 37.5565 4.0 90 USNO-B1 13.86 15.20 14.61 *
276.2404 37.5549 11.2 92 USNO-B1 15.16 14.28 14.67
276.2403 37.5544 12.3 92 USNO-B1 17.43 14.34 15.71
276.2399 37.5528 17.0 94 USNO-B1 19.76 17.49 18.50
276.2427 37.5517 17.4 56 USNO-B1 15.22 15.56 15.41
276.2534 37.5566 27.5 -1 USNO-B1 18.41 18.23 18.30
*** Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5" or brighter than 13
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 2 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 nominal 200 seconds with the B filter
starting 279 seconds after the BAT trigger. No afterglow candidate has been
found in the initial data products. Image catalog data are not available at
this time. 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 061207d18h58m09sUT
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/
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 158646465.53152 or 2006:011:04:27:44 UT
Access to GSC star catalog FAILED. This increases the odds of a FALSE afterglow
detection.
Found 908 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 16% of the srclist region. Found 83 sources in
srclist catalog. Found 1 srclist source(s) without IDs. There are 0 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
18.00 mag.
No image catalog information found.
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?
158646465 279 B srclist found no candidates.
158646465 279 ? image data are not available.
List afterglow candidates for other finding charts.
158646258 72 V srclist found no candidates.
158646258 72 V image found no candidates.
No unique and reliable afterglow was found.
------- Tokens for Quick GCN -------
CATALOG_TYPE: SRCLIST
FILTER: b
GRB_DEC: 37.60590
GRB_ERROR: 8
GRB_RA: 276.20400
IMAGE_START_TIME: 04:27:44
MAGNITUDE: 18.0
MAG_ERROR: 3.0
MESSAGE_TYPE: NACK
SOURCE: XRT